wet sand single stage acrylic urethane

I call it single stage, I guess it is 2k single stage, acrylic urethane , hardner, some reducer.... I will ask this to re affirm my thinking, and maybe help other DIY too . with this system, the reducer will, basically, give it the shine? a slow reducer will shine, wet look, give more than a faster reducer? what I go by. wrong? the temp was pretty w arm anyway when I shot 85. I used the fast reducer.
I ask sscuda, where di d you get that $59 light weight buffer? HF? the buffer I have a pretty heavy, for an old wore out guy!

or I should sa y i used the high temp slow reducer.