Bottom line......you seem to want to be talked out of a 280 and into a 270 ......if the 270 is your preference, go for it so you're not unhappy later.
IMHO, now that the great 270 advocate and outdoorsman Jack O'conner has been dead for a generation or two of new hunters, I've been hearing a lot less for a reason to choose it. I'm not seeing a lot of following here on this thread either. Yes, it's a fine round, but so is the 280. You're dealing with about the same necked down '06 case, powder, and recoil........so why not go with the 280 which has a superior choice of bullets, trajectory, and impact energy downrange? If you say you don't need the extra power out of the '06 sized case in a 280, then I don't see why the 270 is much different. I'd choose the 270 only if my daddy died and left it to me, or I got a heck of a deal on one used. But, that's me...not you.