hey mate, I have recently replaced my rear shock to a fastace BS66rc 280l. it has rebound and compresion adjust. nice looking shock. very comfy to ride, made a big difference in acceleration as well. Just fine tuning it at the moment till im happy. I have heard of people who bust these shocks dnm and fast ace very quickly due to incorrect installation. I only tightned mine up firmly without any wobble but not so the swing arm was bending into it which is what i have seen in the past. East 50's are about 10 buck between the 2 brands. I would not say no just coz its china. china are stepping up hugely in the world now. they japs are actuallly in conflict now becuase of the this. hope this helps.