I have switched from Durango back to the B4.1. The parts quality of TD cars is awesome but the car didn't suit me and i couldnt keep pace like I did with the B4. One of the many things that was nice about the DEX210 was the ballcups and ballstuds. I'm going to use them on the B4 since they are beefier and scale wise, they look more proportional to the rest of the car. That is the designer part in me. One thing i wish i could use out of the 210 is the ball-diff, so flippin smooth.