2.93 vs 2.8

I have a 2.93 with the so called non slip slots on my 04 and am not happy with the belt dust. I am going to add the Steeda Auxilary pulley and a std groove 2.93 or 2.8 pulley. What is your real world opinion on the pulley sizes? I will race the car occasionally so ET is important.
I have the following mods currently and may add a Cat back when I hear one I like. (I'm leaning towards the Magnaflow)
2.93 upper
65mm BBK TB with matched intake
MotoBlue CAI
Predator Tune
TriAx Shifter
Steeda Diff Bushings

I like the 2.8 with the idler pulley rather than the 2.93 with the no slip pulley. No dust, no slip, 1lb more boost.