I saw MLB last Wednesday. I've never seen Ben in the role, so I can't compare. That said, MLB was beyond amazing- definitely got into the emotions (snot and all lol) and did Evan's "tics" believably (which requires doing ENOUGH without OVERDOING it). Yes, I'm disappointed I didn't get to see Ben- only because of all that has been said about it. I had purchased a premium seat for the purpose of getting a chance to see Ben before he left. I can now say I am glad I got in to see MLB in the role while he's still there (his contract must be coming up soon too... they should really do something to keep him 'til he can be the "primary" Evan either in NYC or on tour). Not once during the show did I think about wishing I was seeing Ben. For what its worth, I saw Colton as Jared and Asa/Garrett as Mr. and Mrs. Murphy- all excellent. If you are going to a Wed. or Sat. matinee, you are in excellent hands with MLB.
Also- I just want to mention how well-organized the stage door was- barricades up, security told us the rules (one signature per person, no selfies), Colton, Asa/Garrett (together), and MLB all came out and were friendly and appreciative. Security also told us when no one further was coming out. The crowd was also "well behaved"- no pushing, folks made sure kids who the cast might not see got a chance, etc.