New Yamaha S6 Soundfont
I have just put the final touches on a new soundfont. A Yamaha S6 (one of Yamaha's premium hand built pianos) was recently sampled by Dore Mark (see Pianobook for details) and he gave me permission to adapt it to the sf2 format. This piano has 7 velocity layers of sampling which makes for a very seamless timbre change over the velocity range and it has a lot of character along with a nice brightness and fullness to the sound.
It is 360mb in size and it is freely downloadable from my site https://sites.google.com/site/soundfonts4u/