I feel the grip of the 660 is on par with the RE71 and it doesn't fall of temp-wise or heat-cycle-wise the way the RE71 did
That's roughly the impression that I got as well. It seems just about every bit as capable and didn't get as greasy with the heat (despite our efforts to try and figure out how hot is too hot), though they did feel a hair more vague at the limit. That also just might be my limited experience with the 660s and/or time since I last ran on the REs speaking though.
I also really still need to try something on A052s... for science.
Solostorm has a bigger user base and people upload their runs to the cloud at larger events
Oh yeah! Almost forgot about that feature. I need to go bug some of our other attendees to see if anyone else has been doing that.