I can see the appeal of the 6.5 Creedmore, but honestly I don't think it is a good buy. Ammo is hard to find and generally more expensive than 308. 308 is extremely versatile, very easy to find ammo ranging from inexpensive bulk (PMC bronze for $0.72/round) all the way up to high end match ammo and everything in between. Selection of hunting ammo is amazing. Reloading components are available anywhere. If you reload there are some really cool possibilities - like 208gr AMAX bullets with crazy high BC, people are able to stay supersonic out past 1200 yards. Match barrels are widely available. 308 just makes a lot of sense.
RPR in 6.5 Creedmore is a safe queen gun. Yes, the ballistics are better, but if you actually want to shoot, 308 is the way to go IMO.