No, I don't regret it. The phone isn't perfect(but then again what phone is), and it hasn't randomly rebooted lately, so I don't regret it.

Also, since I finally got MfE working I'm a much happier camper.

It's got problems, but not enough for me to return it. Good thing it has the T-mobile 3G bands though, otherwise I don't think I could deal. That's part of the reason I like it - the browser+3G kicks serious arse!