I just bought a 6.5x300 Weatherby Vanguard, love it, bought expensive ammo and expensive to reload forHad 2 creeds tried liking them but got bored with the fact they didn't really give me anything a 243 didn't in moderate distances and I prefer speed. Never been a short mag kind of guy so prc didn't do it for me either.
Always wanted a 264wm but the basically zero factory support squashed that. Now I'm eyeing a 6.5 rpm pretty hard. 264wm like performance and seems like almost as many factory ammo options right now (probably not but weatherby covered their bases pretty well with the 3 options they released so far). Now if only someone besides Winchester chambered rifles in 264.
At any rate different strokes for different folks but there's a pretty good chance I'll be adding a mark v 6.5rpm to the stable fairly soon.