I took TruePianos several days ago, do not forget that they have 30% CakeWalk discount if you have some X Pro.
When choosing DP several years ago, my first choice was Yamaha based on keys. But the sound in headphones (they use short samples + what I can call "sin waves" for decay) was not acceptable. Next step was Roland, with there SuperNatural (means "Absolutely Synthetic"...) engine. So I went to Kawai, which has somehow hybrid engine. And so for VSTi piano, TruePianos sound ok for me. I have tested several Pianoteq generations, was ready to take 3 when 4 was introduced but 4 was not sounding "right" and 3 become "obsolete". Even the latest version sounds "too perfect" for me. I have tried old Ivory, got several cheap samples (including last IK sale) and come to the conclusion that I dislike pure sample based solutions even when the samples are huge. I guess the problem is mixing samples together, tails from samples recorded separately as arithmetical sum are far away from real piano response, which generates strange sounding, a kind of "unnatural" effects. But that is just my (n00b) opinion.