suggested packs for live jazz performance

For your ears it seems a no brainer to simply avoid K2. Just because a lot of us like that pack doesn't mean you have to.

Plenty of presets suitable for jazz club style environments.

Up against live instruments it's important to have a sound system with enough power and loudspeaker designs that project the sound to the audience.

Compression and EQ can help make your chosen instruments cut through - also picking presets with the right reverb for the room size - and microphone positioning should help.
Obviously a real unamplified acoustic piano doesn't rely on those EQ and compression tricks - or indeed added reverb blending with a real acoustic environment.

Whatever the music the D pack is the most obvious no brainer. D has a big collection of presets because the D absolutely dominates in the classical world, high end jazz and probably features in Pop and rock too - but the Yamaha (YC5 here) also big in Pop and jazz.

I guess it depends on the type of jazz. Jazz/funk look to the electric piano collection too.
U4 for the upright old time sound.

If playing live your sound system is the most important factor.

The packs with more instruments are tempting but when you need a specific piano flavour you might want to consider single instruments instead. My choice would probably be focused around the Steinway B for a smaller piano which is far more clear than the K2 and eventually consider among the grands either the Bluethner or the Bechstein. Both are rich instruments but they do not sacrifice clarity and should also be suitable for smaller venues.

Irl: i guess steinway b is among the best for jazz

PT 8.2:

I like how the anton petrof really brightens up ( if you tune it like a steinway lol), and a combo might really appreciate that

HB Steinway D is the easiest to balance and there is a nice jazz ready preset in the fxp corner.

Practical advice: download the trial and run it through your speakers in whatever venue and see if you can quickly eq it.

Just another opinion, follow your experience.

I think the B is the most convincing model …suffers least from the FM synth-esque attack on certain notes in the middle of the keyboard.
I think the B that Modartt modelled was their own so they probably had more time to perfect it.

Yeah, it puzzles me as to why more presets have not been made for it

EDIT

I do find it to sound intrinsically warm and soft compared to the other grands so maybe not an ideal choice for competing with a band’s other instruments.

I totally ignore what pianos the models are supposed to mimic. That’s the road to confirmation bias.

Try the demo, play the same songs via different models, and pick what sounds best for your purposes. Ignore the model names.

The ubiquity of the D in a certain type of prestige venue is a tad clichéd.

I realised that every digital piano product I’ve owned, prior to Pianoteq, was based on a sampled D, not by design, just a symptom of its reverence.

The Blüthner was my favourite during the version 5 era. It was a very different sound then - if memory serves..

I will check out those tracks.

I'd keep an open mind for a while first about what piano you may end up choosing. Probably the best advice I'd likely give, would be to just soak them each in, until you kind of fall in love with a certain something which reveals itself to you over that time (certain pianos just invoke a kind of artistic "Aah! that's the gear!".

Sometimes, you just load a piano/preset and it inspires something immediately. Definitely worth clicking through a selection of pianos for a while, taking your time searching for how they each make you feel as you improvize.

Probably any piano could be worked into a given live environment (basics like some EQ or compression to lift the dynamic floor higher up in a certain way might be useful in a noisy venue).

If your focus is 'listener experience', it could take you a long way if going with the Steinway B (ubiquitous in recordings etc.. which, to me, isn't making a cookie-cut choice or so much about kind of joining into a hive-mind pattern.. but just outputting a tonal range which listeners feel instantly "OK" with, good 'smoky' flair to it, very adjustable and like already mentioned it has a wealth of presets to get your creative direction nailed down quickly - and I really do love it even before thinking about the other aspects).

The Steinway D also being really well known is in similar scope - but IDK the B probably wins, just imho, for a live Jazz club, maybe.. unless you know you want to hit its specific vibe. All could be good though. I guess most of this is said as it is because you maybe havn't yet set a specific opinion.. but mixing some of column A with column B (what you love to hear + what listeners feel is cool) can't hurt - but in the end, that is going to be up to you

Agree with so much of the above really good commentary and advice - and I do think the Bluthner still has a lot of charm.. but wow, so difficult to choose one alone.. the Mistral to me is probably currently a top of the line choice too.. just very rich, responsive, acoustically interesting yet controlled, can be stately and loosened up with some extra unison width etc. in a vivid way.. but IDK, for sure maybe the Grotrian would suit too? That has some nice bass and interesting top end tones.. For whatever the level of hype/drama in the set, there's sure to be a piano which might peak through - but time spent kind of trying them out would hopefully be the kicker. Working out how you'd like to enhance your choice with some tweaks could be pretty fun - but defaults are so good you might just use one of those instead of becoming overly zoomed in on tweaking things.

Whichever you choose - hope it goes great for you!