I'm on 6.5 now, and I can def say that it's pretty darn snappy for a beta!
One weird thing I ran into was that the phone couldn't log on to Telus EVDO network for data connection. You can just go into the settings and type in #777 to fix the problem, but I thought that was weird because this didn't come up in the earlier 6.5 builds.
But I guess this kinda thing is to be expected, since this is a sprint specific rom
