We preferred it to the BlackBerry 8800 on T-Mo and AT&T, and to our ears it had an edge over the AT&T Curve.
Email over EDGE is generally quick enough on the BlackBerry but we wouldn't mind speed improvements for browsing.
You can set WiFi as the default browser mode, though we'd assume it automatically does this when a WiFi connection is active.
Like the AT&T Curve, this is the phone for long-time BlackBerry users who prefer the thicker, rounded feel of BlackBerries of old.