I'm using the Storm, not by choice mind you. It's been updated to the 4.7.0.100 version and i honestly don't see much difference in the response. Slightly faster, but nothing else worth mentioning. I've had it for the past few weeks, it's still a love and hate relationship. Yes the being able to select things before clicking is nice, but having used a Bold and 8310 Curve before i find it slows me down terribly. Since using the Storm i do not send as many or as long emails as i used to. Having to learn how to use suretype again was a bit of a pain, but i don't hate it as much as i first did after reading an atricle on the top 20 tips for the Storm. Camera quality isn't all that great if you zoom even slightly, very pixelated...especially for a 3.2 MP. Sound is brilliant, i have to give it that.
One problem i have seen a lot of though is it doesn't seem to handle IVRs very well. Being a 3G/HSDPA handset, browsing is surprisingly slow. When compared to the Omnia, considering both have relatively same specs and the fact the Omnia is running WM, i was rather dissapointed the Storm lags so much in certain tasks.
Things i absolutely love though is the search function, just holding your finger over the name or subject to see all sms or emails as well as artists in the media make things easier to follow. Now that i've learned how to use numlock and casplock on it as well as suretype i'm starting to get a little faster on it. One handed messaging is a lot easier than i originally thought possible. Though the accelorometer is a little too sensitive and tends to switch from portrait to lanscape with a slight tilt.
End result, i would still prefer a Bold, but the Storm isn't all bad once you get used to it.