I went all in on MT7s front and rear with a 200 and 180 at the rear. I used to run 200 in the back but I always seemed to be bending the rear rotor sometimes. I figured that the larger rotor combined with klutziness was knocking it. So far so good. The pads are 'race' compound and they bed in well but I know that they aren't going to last as long as other pads but I'm happy with the stronger braking force.
Shimano icetech rotor up front and centerline at the rear in the name of comparisons.
Beforehand I had Code RSCs and they are really great brakes : lively, smooth and good ramp up on modulation but I always preferred the levers that Shimano have and the slightly lighter feel of their systems. I just didn't gel with the manner that they did the stopping with. But that's all personal preference.
Jeff Bryson installed the front brake as the hose was too short and I have no first hand experience of bleeding Magura systems, yet. The rear needed a trim and was very easy to re-install - I will definitely miss the bleeding edge port on the Codes when it comes time to bleed though.
They have lived up to expectations and price. I like the lever feel and the modulation is smooth, consistent and ramps up well for me. The first test outing was hooning around on the Braemar side of Fromme using Lower Expresso, Pennzoil, lower Digger as baselines and then finally dropping into lower Boundary to see how well it could they could keep a consistent slow speed when crawling down steep wooden features on a rainy day.
My crappy finger joints are a lot more pleased with the hook on the lever and when my index joints get too aggravated it's nice to know I can two finger brake if needed.
It does take a little while to get used to the upper end of the braking modulation but that would be the same kind of learning curve I'd expect from any new brake system.