RST does make some nice forks, they put out some low end ones for x mart bikes (50>) But thier higher priced forks (500>) ride great, and you can see the quality even with an amateur's eye.

Mostly, it depends on what kind of riding you do. For me, a RST Capa T7 was fine. I am going to upgrade to an SR Suntour XC fork with magnesium lower legs when the RST stops working smoothly.

If it's a quality fork, it's all about what suits you.

-Crash