Not me. I have the 850s, not the 750s. I've never heard the 750s. I don't find the difference between the 850s and M60s to be huge. But, from what I've heard the 750s are more laid back than the 850s which are a slightly more laid back than the M60s.

I can tell you that both companies provide quality products, and have fantastic customer service. So, it would come down to which sound you prefer

I think Spiffnme has the M60s and has heard the 750s. Hopefully he'll catch this thread.

Jack

"People generally quarrel because they cannot argue." - G. K. Chesterton