The additional power of detuning each and every note in Pianoteq Pro is priceless.

Definitely a very good feature present in the standard version too

Or, if you like your piano not to be perfectly in tune you kan tune it note by note and unison detune it on individual note's allso.
This i think often make it sound more alive

I just have to say that this is one of the GREATEST features;  about a decade ago, I was pouring over numerous books and websites, dreaming about being able to try all sorts of different tunings -- I even went so far as to buy a couple tuning hammers (AKA wrenches, more appropriately) and "went to town" on my own upright.

(Note:  I now HATE tuning real pianos.  Goodness bless the folks who actually have the patience...)

With Pianoteq (and knowledge of Scala files), I can try whatever bloody scale I please, even some truly bizarre non-geometric stuff, as a matter of routine.  The additional power of detuning each and every note in Pianoteq Pro is priceless.

(And yes, this definitely makes the piano sound "more alive.")

... I am a tinkerer and like the huge editability.

Get the pro! Pianoteq produces pianos at quite at steady rate. Check their product history. The better the pianos the less you have to do to tweak it. The pro version just allows you to do what you want. You get more control over tuning, voicing, design, output and effects. These parameters gives you more control of the notes and sections of the keyboard, rather than sliding and adjusting the whole range of the keyboard. So if you like the sound on a section of your keyboard you could adjust only the section that you don't like.

The problem, I guess, is that the Pro version was released at the same time as the Standard version 3.6. But if they named it, then, version 3.6 Pro, the impression would be that the Pro version had been around for some time. On the other hand, if they called it Pro version 1, then the situation would be still more confusing, since the Pro version would seem to be behind the Standard version in development...

Buy the PRO version.  It won't be regretted.

Let me explain:  I was a beta tester on the Pro version, and I thought (and voiced my opinion) that the Pro version had too many adjustments for the average user.

I consider myself the average user.

Thankfully I have the Pro version, and I use quite a few (not all) of the adjustments available.  I particularly like being able to adjust the Impedance across the keyboard, as to my ears (maybe my style of playing is more accurate), I find the default Impedance results in decays that are too long in the mid to high treble.

Glenn

Hey, Craig!  Rest assured, you most certainly are "being silly." 

Ditto
...& everything else, too !

If you buy "Pianoteq Pro," then you're buying the whole enchilada (minus the paid add-ons in the store).  The mic positioning has been an integral part of the program since version 3 was introduced, and K1 is the newest built-in "flagship" piano (for obvious reasons ), so sweat not these details...

(Version 3 was a free upgrade, BTW, for version 2 users.  MODARTT absolutely rocks in the customer-service department.)

Whatever you buy from the dealer, the only important part is -- ultimately! -- the serial number.  Once that's registered, you can download the latest version and go to town.

Your words are perfect when you describe the "engagement with the instrument."  This was my greatest draw to the program when I first tried it, too.  Pianoteq plays more like a real piano than any sampled-piano library I've tried -- AND you can do a ridiculous number of exciting things with it, even "beyond piano."

My understanding is that the demo version I've been playing with is the 3.6 demo - and there are two things I especially enjoy about it - the new K1 piano, and the mic positioning options.

I am thinking of buying Pianoteq Pro as I am a tinkerer and like the huge editability. However, because it doesn't have the version number as part of the title, I'm a little concerned that if I were to buy PteqPro from a dealer, that it wouldn't include the K1 or the mic positioning options (if those are new to 3.6).

Could somebody reassure me that I'm being silly?