Bought a used set of Quests about 15 years ago to replace my stacked DQ-10s, and in my room the MLs sounded gawd-awful! I dare not let my (then) wife know that my "last" speakers were grating on my nerves, but that was also before I knew anything about room placement. I did get used to them but borrowed an amp that sent some sort of spike into them and wrecked them both.
Thinking it might be the power/crossover boards I hauled them 4 hours to the ML factory in Lawrence, KS for testing. Those wonderful folks not only dropped everything they were doing, but gave me a full facility tour before bench testing my circuit boards. They told me the 'stats were fried, gave me a great deal on a new set of panels, taught me how to install them, and sent me on my way. In less than an hour I had them back up and running at home, and kept them for a few more years.
The way they treated me you'd have thought I owned a huge CLX home theater set. Couldn't be happier!
I worry less about what can go wrong than how the manufacturer will handle things when the DO go wrong. Top tier all the way!
Side note: My lovely (new) wife just walked in with ANOTHER damned artificial Christmas tree! The friggin' DECORATING has begun!
So much for listening to tunes today...........