Are the Lyras really that bad or is it the usual case of Internet exaggeration?
I used a set on a borrowed bike for a few weeks and they were genuinely awful, possibly the worst disc brakes I have ever used - weak, hard to adjust, stupid pad design and replacement procedure. I don't know if that's an exaggeration and it was while back now, but I have very bad memories of them...
Meant to add to my comments on the Spyre above that the standard pads don't seem to be great in the wet, but they use a Shimano-compatible pad, so there should be plenty of aftermarket options. I also came across a forum post somewhere, where someone, I think, on a tandem, had one of the carbon-armed SLC Spyres fail on them apparently because of the heat generated on a long road descent.
The gist of it was that the carbon ones might be best suited to cross racing where they wouldn't cop quite so much sustained use, but I have no idea whether that's the case. Might be worth considering if you're planning on lots of alpine road descents I guess.