I'm playing a PSI-hybrid: Sniper/SMG + Metathermics, with enough TM and PK to get to Stasis and Forcefield respectively. I've been waffling back and forth between the standard beetle tac vest and riot gear (no shield), which was buffed since the last time I played. The buffs seem really nice - double mech resistance/threshold from melee and a free +2 threshold base seem great - but I'm not sure if it'll make me tankier than the huge DT bump I can get from a nice beetle carapace. I'm only running 3 CON on Hard, so maybe my health is too low to worry about surviving melee attacks?
Is it potentially worth picking up Ballistics on Riot Gear?
Also, on an unrelated note, does anyone know what the scaling is for metal plate reinforcement on boots? I have steel plates and some Ancient Rathound leather at similar quality (~100), and the Leather boots + steel reinforcement have better defenses than the pure steel boots with the same armor penalty.