I chose the Accura MR over the Optima because it had a higher end barrel and higher comb height. I can't remember now if the trigger was better... too long ago and my memory is too fuzzy these days.
With the rules now of being able to use a 1x scope or red dot I would make sure the Optima can get a good sight picture with a raised optic. MR-X has adjustable comb, so that's not a concern.