Hey There,
All networks have their features and qualities, but if you are a gamer Curse (aka Union For Gamers) is the best network to go under, no lock-in, 90% revenue share, and all the standard 'features' that come with a YouTube partnership. Fullscreen and TGN aren't the best of networks to go with if you're a small channel. Fullscreen's lock-in is 2 years for smaller-sized channels. TGN's CPM is horrible and i also think there's a 2 year lock-in. Also, don't take the first suggestion that pops up "Fullscreen" just because someone suggested it.
Good luck!