(mt)'s (dv)Rage Vs. WiredTree's Hybrid1

I have a (dv)RAGE with Media Temple, but to move to a managed solution.

I've heard very, good things about WiredTree. Their Hybrid1 server is at the same price, $100/month. Plus more storage, more transfer, same RAM. Looks like similar hardware.

Basically... why SHOULDN'T I make this move? What's the potential downside? Seems too good to be true.