First, good luck finding a stainless 700 action for less than $500.
I've had enough issues with 700 scope alignment to warrant the Stiller if given the choice.
A one piece bolt is comforting too, especially if you've had a 700 handle fail.
The firing pin assembly on the 700 has been known to be less than adequate.
Then there's the overall machining quality of the Stiller, which may not help performance very much, but I sure do prefer it.
If you have a 700 action on hand and desire bare bones, then roll with it. If intentions are to buy an action, especially stainless, and add a firing pin assembly, recoil lug, side bolt release, bolt handle, aftermarket trigger, quality bottom metal etc. then Stiller is a slam dunk.
Stiller has basically the same FP system as a Factory 700, one if not the best is Jim Bordens design, he has put alot of thought into it along with bolt handle timing and trigger timing, ie ( sear to cocking piece hand off)
