Jared- you are correct about the wheels- poor track- softer wheel. I'm not too impressed with the Orion hard dish, but I haven't felt the extra hard one yet. (that doesn't sound right
I would stay away from the Sorex wheels- they are good, but they break the centers out all the time. I have broken a few, and other drivers I know who are all excellent drivers have too.
If you want dish- get the Yokomo 512 ABS. They are the best I've found so far. They just came out with a new precision dish Yok wheels too. I have some one the way. I can't speak for the Tamiya, but I've never heard anything bad about the Tamiya dish wheel.
If you would consider something other than a dish, then look at the Cross 15 spokes. It's the wheels that the Carpet Nats control tire came mounted on, and the same fot the Reedy race last week. I like them a lot and they protect the nut from catching the boards because the spokes are sorta rounded outwards. There is a picture of them on Stormer Hobbies website.