I feel like there are a lot of options in the 260/.25/6.5CM range. .257Bob, 6.5x55, .25-06, 6.5 Arisaka, .260Rem, 6.5CM, 250 Savage, the Weatherbys, the Winchester and Remington magnums, 6.5 Grendel("Sporter"), the MDWS AR wildcats, Kurt Bellm's excellent single-shot wildcats necked-down from 7.62x54 or .444 brass, etc., etc. Part of me wants a 6.5CM just to see what the fuss is all about. Part of me wants a .257 Roberts in a classic wood-stock rifle, and because it's not a 6.5Manbun. Part of me wants to pull something at random from the PT&G die & reamer catalogue and have something completely unique. Yes, the 6.5 is a lot easier out of the box, and is capable of amazing things... but if you want to level up from Level 3 Gun Nut to Level 4 Firearms Enthusiast, you'll have to start down some of the rabbit holes...