There's a Rhodes "shootout" video here:
https://www.youtube.com/watch?v=xuMd581mI7ENot a complete set, but a reasonably good sampling of what's out there.
I just played my XLN Rhodes and Velvet.
The XLN sounds a
bit more realistic, with a nice bell tone in the upper register. On the other hand, it's not sampled to maximum velocity, so when I
really whack the keys, that's bit is missing.
On the other hand, Velvet 2 responds nicely to velocity, all the way to a nice hammer smack against the tines and distortion. And it's a lot easier to dial in the sound that you want, with options to adjust the distortion, wah, modulation, cabinet, reverb and delay. Plus, it's got a Mark I, Mark II, SC73, A200 and Pianet.
As you can guess, I find the Velvet a lot more fun to play.