Seeking Glue Recommendations

Nice! I've done the exact same thing myself, though a great majority of units still need painting.

Personally I've had mixed results. Krazy Glue worked well on about half of them, but I noticed in storage of a unit bapped the side of the container too hard then it will pop right off the stand. I've debated modeling cement but I'm not sure how well it would hold over time.

I'm more following this for my own sanity as well. Though I did pick up some other glue this past week I just haven't had a chance to try mounting it yet.

Model cement is designed to bond 2 pieces of plastic together. It actually melts the plastic for a permanent bond, so if you have 2 pieces of plastic it will work well, provided:
1) both pieces are clean and paint-free on the bonding surfaces, and
2) both aren’t perfectly smooth.

To fix both of those issues you can do some light sanding.

I use Gorilla Super Glue Gel. Historically it has done the trick with my PLA plastic. For resin to PLA, which is what I've switched to, I haven't noticed any issues but they haven't been dropped or knocked much.

Yep, ya don’t want that perfectly smooth base when ya glue it.