While it seems that plenty of people like the 6.8 Rem., I guess I'm one of those that haven't been drawn to that cartridge.
I'd prefer to use bullets that are a bit heavier than the 110's and 115's that are being loaded in this round. I know that heavier .277 bullets are available, but the little 6.8 may not have enough horsepower to push them fast enough; don't know....
In a Contender, I personally would take a long look at the 7-30 Waters. I've really enjoyed that round in the past, and may get another very soon.