After more conversions to MT couplers, I realized why people love them. They couple really well and the spring tension on the couplers gives the train a more realistic look while starting up the train.
Do Accumates have the spring tension too?
I am debating on whether or not to move to metal wheel sets. Uncoupling the MT couples with a pick is really easy, so I am not sure if using magnets is the direction I will go. The local club uses MT couplers, but trims off the metal bar to have a more prototype look and just uncouples manually. I did not ask them about metal or plastic wheels though.