Well I was seduced and bought the Solo. No chance to shoot it yet. Factory recommends premium defense ammo in 124 - 147 grains such as Remington Golden Sabre, Hornady TAP, or Federal HST. Many people who have bought Solos lately have had no problems with these or some other medium to heavy weights such as Speer Gold Dots.
Given that criteria, what load would be your choice? I presume DPX is out being 115 grain. That's the way I see it.
I figure it will be my low light gun as it has the laser grips, probably as a back up. If some nut opens up in a movie theater I'm in he'd better take me out quickly or there's going to be a nine ball in the corner pocket that used to be his face.