What about the EVO 4G? It's practically the same phone!
Yer it's got to be the EVO 4G all the way for you. But i'm very much about the hd2 myself
You can dual boot it and get Android running on them now. I have Cyanogen Mod running Froyo 2.2 on it right now. It is awesome. Not as nice as the EVO, but I am on TMO and I dont like Sprint. So I will live with it.