I have KYB's on my front at the moment. On my previous car I had them on all 4 wheels. Well, with KYB's you have to give it about 3 months or so to break in. They are pretty tight at first. They loosen up over time.

The quality in regards to leaking or bleeding is very good. They don't break or fail. Overall it's a pretty decent shock. I know it's better than monroe, but I can't compare it to sachs or bilstein just yet because I've not installed them.

My car is stock, not lowered. I am installing sachs shocks though because it's the most comfortable shock. If I were to go racing or had lots of money/time I'd install bilstein shocks... maybe.