Just a little suggestion for you who buy the summer sale - niceties: if you, in the evening or so, spend 2-3 hours with 2 of your favourite pieces you play, and maybe a kind of preset you like (the first, or recording 1-3, or cinema, or intimate - whatever you like) - you will find out which you love best pretty soon. Makes more sense to try, say, the grands with slightly similar settings than confusing yourself playing all with highly different ones (or the cat, if anyone remembers Monty Python's).
Another idea is - what music you will play during the next months/years. Should all 3 choices be grand pianos, what about the U4 upright, do you like historical pianos (which are a universe of their own at least to me) - "non-pianos packs"...
I usually bought the packs when they were new, but once had to decide rather quickly at a summer's sale or winter. Doing it like described narrowed my idea what to buy to 3-4. From that minute on I tried every single preset plus a few changes I made myself (usually ending in going back to a preset or just slightly changing eq or reverb settings).
And after playing for 2 hours - I had my choice. All the packs are great, so you would make no mistake with any, but - playing what you love best, and chances are after 2 hours you think "I must! have this one".
Just a suggestion - but as you read, you got nearly all the time in the world, er, 14 more days!