Well in my biased opinions, I'd say buy AWRs. It's worth the money. I've had mine for over 65k miles and still have'nt had any problems. It's really not as harsh as everyone says. There's a little vibration in the steering wheel, but it's better than the squeak and money you'll have to pay for all new mounts. But to that, I am very biased. I am not really willing to try any SLS products. I have only heard of them being defective/breaking/having some sort of problem.