On a completely different note, I thought I'd post a list of my favorite weapons so far. I'm in the late middle game right now, so this might change by the endgame, but so far I like:
- flamethrowers. this is the ultimate terror unit destroyer. I dismissed this weapon as useless at first, but after seeing it tear apart reapers, cyberdiscs, and even sectopods in one autoshot, I always bring a few along with me now
- assault rifles. the low tu requirements, cheap ammo, and 4-shot burst make this weapon useful even in the late game. I bring them along for anything squishy - sectoids, snakemen, anthropods, hybrids, etc. and give them to whoever needs firing accuracy experience.
- AP Sniper rifles. that is, gauss sniper rifles and then later railgun sniper rifles. excellent accuracy and damage means the back line hits harder and more often, resulting in fewer deaths for the front line.
I use many other weapons as well, of course, but these tend to be my top three.