My only complaint is that my car is too low now. I wanted it this low, which is one reason I chose the QA1, but my exhaust drags on everything now. I'll be getting coil overs one of these to fix that problem.
If you've got the cash(and coil overs), I would go with the MM k-member. I really wanted one, but I just couldn't afford it at the time. QA1 is probably the best of the "cheap" k-members, so that's what I settled for. Im happy with it, but I would still rather have the MM k member