I think the big price difference on the Century Arms are threaded, versus unthreaded barrel. I don't love the price or the lack of a LRBHO on the MP5 clones. As for the Beretta, just not my cup of tea. I just sold my AK, AK pistol and 22 trainer, so I'm reluctant to go with the AKV and the trigger issue makes me more reluctant.
Anyone have a SPA3 Stribog with curved mags? Was leaning toward this with Glock mag lower, but heard reviews that said the original curved mags worked better and were easier to get in and out of the gun, which is cool, since I prefer the look of that lower anyway.