I used to own a KJW M9 Beretta (2006) but it crapped out on me. The first thing to malfunction was the trigger spring, and then the rest of the gun went when I took it apart (carefully) and attempted to repair it myself (though not carefully enough).

Finally deciding to replace it and I have narrowed down my decision to between the KJW M9 (($100) full-metal) or the KWA M9 (($120) full-metal).

Pros and cons? Easy to break? Gas usage? Capacity? Feels real? Works real (slide, safety, decocker, mag release)? I have read reviews though I know that Airsoft Arizona is a seasoned source of information I can trust.