MMC Brakes

[Lefty]

I have the option of getting my hands on a set of these for a very fair price and I believe pads are easy enough to get (if on the pricey side).

Are they noticeably better?
Is the difference in Unsprung Weight noticeable?
Are the calipers the same?

[Lefty]

Hmmm, plenty to think about then. Thanks!