Autoscope is reputed to be good, but pricey.
Rodney Herson Automotive has a stellar reputation. I believe he used to be the shop foreman at one of the local MB dealers.
There was a recent recomendation made for a shop on Floyd circle, behind TI at Central & LBJ. I can't recall the name of the shop. Use the search function to dig it up.
I've no personal experience with any of these - all my repairs are done by "Jim's Garage." (Motto: We don't always fix it right the first time, but you can't beat our parts & labor pricing.)