I like them both, Savage and Rem. The Savage AccuTrigger is far better than anything Rem has ever offered in a bolt gun, that's for sure. You don't need to replace it.
For the 300WM, I'd rather go with the Rem, based solely on the amount of aftermarket parts for available for 700s, and my own familiarity with 700s. Savage does make a great bolt gun, though, and I wouldn't hesitate - especially if I found a 300WM already in a nice $270 stock, heavy barrel, for $630...