RE: Which would be better??
depending on how far you average shots are.
anything under 300yds i peronally think there is no need for a magnum.
my opinion on a great whitetail round is the 280rem or 30-06sprg. for short action 308win or 7mm-08rem.
as for your others yu have mentioned i cannot comment on those since i use a 35 whelen and 450marlin on whitetail.