Kharn
He`s cheaper.
You`ll find that for big fat targets in a serious game the number of wouds won`t matter as the enemy WILL have big fat guns to point at it anyway
Plus, it`s more of a fear factor.
Plus, maybe it`ll change your luck :P
PS Can`t remember Kharn`s rule for allied infantry near him.... but i remember it was smexy and worthwhile