I got a Near Mfg rail. Haven't fitted it yet, but I think it's the right set-up and is really nicely made and finished (can't comment on fit yet!). I heard they are now no longer available, but suggest you get hold of Richard himself to enquire - http://www.nearmfg.com/
My optilocks have worked fine, but don't really inspire confidence based on how they "look".
If you aren't in too much of a rush I could sell you those Optilocks with the 25mm rings once I've received my rings and new scope from the US.
I used them on a .300 Win Mag.
But IMHO those Optilocks are not the "best suggested mounts" as you asked.