If you must have Glock mags, and you must have non-res, I think the newest Ruger PCC is worth a try. For sure over the FX-9 or any Keltec product. If you open the mag requirement up to different types, I’d go for storm or the x95, both can use 10 rnd mags.
I'm thinking the River PCC is a solid buy. I was at Cabelas here and finally took a look at the non modular railed version with glock mag adapter included. The mag type just makes the most sense for me, and wanted to add a NR variant and not spend $$$ on more mags.