How snappy? "Oh damn" snappy, I have had every single windows mobile device from HTC sprint carrier and it is very snappy. You know how you get a phone out of the box and you play around with the options almost run your own stress test. Well out of the box with Sprint's stock rom this phone is amazing. That's why you see alot of threads saying if they should even flash or not. I think at this point with such a high-end phone you would want to flash because your an enthusiast. I personally flash because it's fun-some flash to get the full features of their phone.
So all in all out of the box-very snappy
With mods and custom roms- very snappy + personal pref.
