I just returned my T-Mobile Dash for the Blackberry Curve 8320 (I loved Windows Mobile, but it was being a hassle with corporate and personal e-mail accounts not linked to Outlook). The Blackberry rocks. I got unlimited data to boot. Plus, this set has this feature that if my coverage is weak, but it's near Wi-Fi, it'll use Wi-Fi UMA to make calls instead of the mobile network. So if I'm in a basement and the signal sucks, it'll switch to Wi-Fi. Neat!