RE: .270 vs 30-06
the 30-06 is more versatile UP the critter-ladder from deer... the 270, more versatile DOWN the critter ladder.
30-06 ammo is easier to find in BFE if you get stuck there (or at least easier to find with some variety)...
can't go wrong with either... you've already made the important choice and avoided 308win!!! [8D]