Yeah, we wore jackets, jeans, and eye protection. Just wish I had thought of actually using my hoodie. (got shot in the left ear)
You're a smart guy, then. A lot of newbs don't think to/want to use eye protection...you don't want to get the nickname blinkie.
I'm going to echo the exact same thing you just heard from everyone else: forget about it if it's much less than $100 (a JG AEG or two used to be under a hundred, but I think the prices went up). Even some in the $100+ range are horrible (for instance, my CA Sportline is absolutely terrible. I'm looking into getting a VFC M4 E-series. So, word of advice, avoid Classic Army's sportline M4s at least, because I hear horrible things about them in general that line up with my experience very well). Is your tri-shot a rebranded $20 Wal-Mart junker, or did you get it somewhere more reputable? If it wasn't from Wal-Mart/another chain, cost you more than ~$30-40, and isn't a heap of clear plastic, keep it for now and save your money. It's probably not a bad gun. When/if you get enough, try the G&G Combat Machine M4. I hear it's wonderful (though, if you feel like being a little bit less generic, you could try going with the AK combat machine instead). Even though fake recoil ist wunderbar, unless you feel like dishing out 30 more bucks, stay away from the Combat Machine with electric blow back.
You mentioned a neighbor guy, though. You guys didn't play in the open street, did you...?