Just my opinion, between the two calibers listed, I would go with the 6.5. Don't have one of those, but do have a 270. Both great calibers, but I've always seen good things about the 6.5 and how it was used so well overseas. Been wanting one, but just never got around to it. Just my 2 cents worth.... The 270, as good as it is, is just..... boring. Kinda like the 30-06, just boring, cause it does it's job so well. ( I've got 2 30-06s btw.)
Best of luck,
Deerandduck