I came very close to buying JM Labs yeasr ago to run with my McIntosh system. The dealer had McIntosh and they sounded very good together. As long as you go solid stae. They played them with tube amps and they sounded a little bloated. But with the SS amps it was a beautiful marriage.
I just ended up buying Revels, but sometimes wonder if I should have gone with the JM Labs. But I am a McIntosh guy and may be biased. As some who dislike Mcintosh are biased against it, one thing is McIntosh will serve you well for many many years and you can always find a buyer. The MA7000 is a great piece and you will love the sound and features of it.