Ok, now that that's out of my system, please don't be rude when asking us for advice. There is no reason for it. If people tell you a gun is better, or none are any good, it's because it's our honest opinion. If you don't like it, then don't ask for it and come to your own conclusions. We used to get a metric fuckton of posts from n00bs asking "which gun is best" or "which one of these is better".. and honestly, it gets tiring saying the same thing over and over and over. Granted though, it is our choice to do that, so...about those two.
Essentially, they're the same gun. They're both a rebranded CYMA. The Lycon is smaller because of the collapsing stock, and has a small battery. The Broxa will balance better because of a large battery in the stock (not sure if it comes with one though), and a large battery will always last longer and generally give better rate of fire because of the higher amperage available.
Both guns have metal gears.. don't know where you got your info from on that one. If by some chance you are looking at some other gun with plastic gears, don't bother. Any gun with plastic gears is crap.
Things like magazines and rails are easy enough to fix with aftermarket mags and rails, and are thus not a big determination point IMO.
Amos was correct.. those guns are pretty much the same (other than the minor details I listed above).. choose whichever one you like better.
"Someone in a Prius tried to race me at a stop sign the other day. I couldn't believe it. I had him for the first 100 feet or so but I can only walk so fast."