I have both the MM and the Quark. For 1/8 I like the Quark 125b just slightly more. It is hard to put my finger on exactly why. They both perform pretty well. I think it is because a couple of times when I have gone from a complete standstill to full throttle with the MM it has yielded just some clicking (no forward movement) from the motor as if some one was holding the car in place. Like when a phase wire comes off. If you blip the throttle again the problem is gone and your flying down the track. This is a rare once in a while thing, the rest of the time though the MM has performed very well. I like everything else about it. I hate even saying anything negative about it, because I really do like it. The programmability is so much better and easier. Maybe it's me, maybe I have found the right setting yet. I will continue to use both controllers, but my vote is for the Quark, for now.