Taking into account the potential of these going prohibited. I'd say go for the cheaper options. Ruger pc carbine, The FX9, or JR carbine. All three of those makes are great, though each has their own quirks but that can be said about any firearm. The FX9 doesn't like aluminum casings, the JR has no hold open on empty mag, and the the Ruger can sometimes comes with a weak blow back spring and a bolt hold open button that is to easy to release by accident. Non of these are deal breakers, just individual quirks to each of the rifles. Choose which ever one you feel meets your list of wants the most.