The M&H certainly is an excellent action.
Two things I think could be better are the block really sticks way up in the rear which squares out the lines of the action. And the lever/trigger guard I don't like - I prefer the lever to wrap around the trigger guard, not act as the trigger guard. I would like it better aesthetically if it looked more like a Farquharson lever.

They have a really nice one in 300 WinMag for about $9500US.