md,
Although many ppl speak of the M22 and M60s, there really are not alot of posted consumer reviews about them here either, at least not that many posts specifically setup with such a topic header.

There are some more reviews on the M50s here and here.

Glad you took the time to do some critical listening b/w the two. The differences are never as large as some ppl 'worry' they will be.

"Those who preach the myths of audio are ignorant of truth."