I've been pleased with mine...
Kirby Allen 300 RUM with 30"bbl
200AB's and Re25 give me 3280fps with low, low ES

Only shot 4 animals past 400 yards so far, but all 4 were bang-flop, DRT

I sure do like a brake to be able to see my bullet impact the animal through the scope. When hunting long range, if I've got the time to range the critter, check the wind with the Kestrel, dial in the dope, then I've also got another 1.5sec to put the earmuffs on.

I think the big 338's would be superior for working beyond 1000 yards or for much bigger game, but for what I do (whitetails between 500-800 yards) it would be hard for someone to convince me there is a better rig than the 300 RUM