jscomposer
EastWest also has a great Steinway and Bosendorfer in their Goliath VST, which I what I use for all of my piano sounds.
I just love the Bosendorfer in Goliath. That's easily my favorite piano in my library, so far. I layered it with strings and a little bass on the lower octave for a particular song, and the result is gorgeous. I liked it so much, I actually loaded it up on my laptop and took it to a live gig...and was completely disappointed. Sounds fantastic in the studio, but it really didn't work in a live setting. Oh well, it's still wonderful for recording, which is really what it's for.
I caught that Addictive Keys deal on Musician's Friend's "Stupid Deal of the Day" for $29 (normally about $150)...so I'm eagerly awaiting that box in the mail. It can also run stand-alone, so I'm hoping it will work live, as well as give me more solid options in the studio. The package looks great, the demos impress and the reviews are largely positive. I'll let you all know how it goes.
I find the quest for the "perfect piano" to be more or less never-ending. Generally, you get what you pay for (stupid deals not withstanding). But with the rising state of technology, even the "cheap" libraries can trump what everyone thought was the "best" just a few years ago. I think the top packages win out, however, not only with the size and quality of samples, but with the flexibility of the engines that drive them.
~ Heather