I tried SSI scale 2.0, Henning Grips, the new thin factory grip from Tanfoglio Stock 2 OR, and the Palm Swell Bogies grips from LOK Grips
So far the LOK Grips are the most aggressive. SSI Scale 2.0 ranked 2nd. The factory thin grip from Tanfoglio is pretty good actually and takes the 3rd position on my list