I just switched from Helio to T-Mobile 10 days ago. Maybe I’ll write more about my overall experience with Helio later, but the reason for the switch wans’t exactly voluntary. Helio recently merged with Virgin Mobile, which I thought to be great news (although I’ll miss the Helio name) because it would bring much-needed mainstream support to the company, among other things. Unfortunately, approximately two weeks prior to the public announcement of the merger, their service took a fast nose-dive,…