I'll be getting splinters up my ar$e for this answer, but $od it.
Ordinarily from those 3 I'd want Wales, but given that it means a defeat for England if they do which is hardly good for morale going into the last 16 I'd have to change my mind.
Either remaining way then it's a hard question to answer. IF England win the group then I'd probably want the side that had the best chance of knocking the Dutch out on their day which would be IMHO USA?