1.) Neuspeed 25mm
2.) H&R 26mm
3.) BSH 27mm
4.) Other (please indicate brand and diameter)
This is my DD, I just want to tighten up the handling a bit...
for a DD the Neuspeed is what you're looking for. mine is set on the stiff mounts and is combined with HPA SHS coils, the WALK, some polys, and a bunch of other stuff. and i love it. would absolutely do again.
btw many think a thicker/stiffer bar is overkill for a DD R. the suspension loses too much compliance, loses some wet traction, and rides too hard in the rear relative to the front. but i have personally only tried the Neuspeed. i've seen this feedback from some other owners. i'm sure some love their H&R's though.