We have never had any reported problems with MCE (not that I saw or remember, anyway). Quite the opposite. Ryan actually used this forum to help design the Canyon Cages (which was fun), then offered a discounted group-buy, communicates well, and has always stood behind the products. I have been impressed.
Yep, got a very detailed email from Ryan yesterday after I queried him about the hardware issues reported elsewhere on this thread. He's very insistent that they get quality parts, but does acknowledge that some slip through. He'll replace what's inadequate.
He also states that the reason that some have trouble with installation is failing to tap out the loctite on the female mounting holes. I think he ought to put that in his instructions, frankly, since there is plenty of support of that idea here in this forum.
On the whole, you can certainly do worse than working with Ryan. He's a straight shooter, communicates well (and timely) and stands behind his product.