Well, I don't think I could ever dress up my 258 to match OCNSLR's 270, so there's that.
Other than the obvious 2'-itis, the 270 gives you stand-up room in the cabin that I don't get.
At least for me, that doesn't come into play until we're overnighting and we have the cushions and mattress in place. Our berths run the length of the cabin (and seem a bit longer than they need to be, really). So the berth cushions go right up to the cabin door.
But even without the berth cushions in place, at 5'8" I can't quite stand up in our cabin. During the long boat trips I do wish we had the stand-up room in the cabin.
Given the long boat trips we do, we added some real boat mattresses:
Rob