I've got 2 sets of Avid Elixir 5 brakes. When these are working I like them a lot. However they are often not working, requiring a bleed or other maintenance, e.g. piston service. In fact most of the time each bike has been out of action it is due to the brakes! Often they start out great on a ride, then by the end of it they need at least a caliper realign. In fact I think need to align the calipers pretty much before every ride
I'm thinking of swapping them and going for 2 sets of Shimano SLX M666. They get good reviews, look like a simpler bleed process and use mineral oil rather than toxic DOT 5.1.
Is this a wise move? Or can do anything to improve the reliability of the Elixirs?