I managed to get a Stoner 63 a few years ago. Absolute beast of a gun. I don't think I'd ever part with it. I hope you guys manage to find one, very very rare guns.
I had a Real Sword Type 56-1 sometime around 2011 and whilst externally it was a thing of beauty I had nothing but problems with it. Getting mags to fit it was a pain in the arse, the only ones I found that would fit were the STAR plastic real cap mags, but they rarely fed properly. I ended up...
I purchased a Parabellum SIG Sauer P226 with a steel slide installed and it was packaged so carefully and the pistol itself is a thing of beauty. Completely trustworthy seller and a credit to the second hand airsoft market.