RE: Syma Titan Dragonfly 2 or Big Outdoor Lama RC Helicopter
The first one is only 2 channels, so you won't have much control over where it's going. But it's probably a lot easier to set up.
The lama has the advantage of being a full controlable helicopter, but will take a little more adjustment for trims to get it flying right.(Size and coxial design should make it easy to fly. And you can buy replacement parts for it if it breaks)
I say get the lama, you'll be tired of it soon enough anyway, but at least it'll still be there to play with in smaller areas/inside.