For RSB it seems that there the 5th gen options are Stillen; Cattman; ADDCO; Progress. Not sure if the last 3 are really different versions of the same kit.
The Stillen is much pricer, I wonder if it's worth the extra bucks.
I'd appreciate knowing your experience and recommendations. Thanks in advance.

 

honestly.. they all do the same thing...
stillen is a bit simpler to install but its more expensive

addco take a bit more time to install but its cheaper..
at the end they all do the same thing

 

progress wasn't bad price, was very easy to install, and works great

 

Progress, good price and easy install.

 

i thought they stopped making addco. anyways go the cattman progressive route. cheap, easy install, works great

 

You may also want to read this thread.

BTW, the Cattman RSB is made by Progress.

 

stillen is the only adjustable one IIRC

 

yea, but you dont really adjust the RSB so much. 99.9% of users set them to the tightest setting and never change it.

 

The ebay knockoffs are too for half the stealin's price. The question remains, what are those like.

 

progress

 

I got the progress on a group deal for like $128 shipped. Made a HUGE difference in the drivability of my car at high speed.