I’ve got ME7 and AM9 – love them both for different reasons. The ME7’s are stiffer, feel lighter and can be tightened up more for some reason. Nice and easy to get off when covered in mud etc.
AM9s are heavier but comfier, don’t feel as efficient (more flex when cranking hard).
Both of them can have the cleats really far back.
I’d buy both of them again.
Heard a lot of reports of the soles pulling apart on the M200s so stayed clear of them.