I've read a couple articles on the M5 and they were disappointed that there was lag. It wasn't bad but it was there.
And the N54 was pretty good before the software "fix" they did to fix bad hardware.
Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."