definitely seems responsive again. previous version 681 I believe would constantly pause and spin its wheels. So far only problem I found with this one was the camera seems to lockup or not respond to taking pictures. I did have a full black screen lockup trying to take a pic once as well as just now while going into the camera options itself. There do seem to be a few more options in the camera app though for pic quality and settings which is nice.
I still do get the odd slight pause when typing messages which is kind of annoying, but its nowhere near as bad (so far) as it was previously.