I have run everything from progress and tein to raceland, and while there is a difference, it really all friends on what you are going for. The tein rode and handled well, but typically don't lower a while lot. The racelands were a bit harsh when bottomed out, but they went the lowest by far. I, personally, like a stiff ride so as to know where the bad spots in the road are etc...

Personal preference in the end.