My vote is the 6.5 Creed... The 6.5 bullets have been around and continuously updated/improved. Unless the match and competition shooters all go away from the 6.5 down to the 6mm, I doubt you're going to ever be "obsolete".

At least I hope so anyway as I just ordered my 260 rem match barrel today. I am also a reloader which is why I went with the 260, as I can get just a tad bit more speed out of it theoretically. Plus the BC of the 6.5 bullet will out perform the 7mm round given they are the same weight.

just my .02