I think most people complaining about the Meyle HD ones do not install them properly. They must be slid on the control arm a certain distance. If you put them on too far, they will get ripped out. You also have to wait for your lube to dry up (used to slide them on) before driving.
Poly bushings are pretty much fool proof. I have Powerflex and they have been great so far after several thousand miles.[/QUOTE]
I think you are right. It is possible to make mistakes installing any CAB, poly or conventional. I put some Meyle HD CAB on my car and absolutely love them. The front end is tight again. Best $79.00 I've spent in a long time.