I talked to the guy who AV'd me here (Do that) and followed his advice. Bought nice foot gear, goggles etc then did a long series of trades to end up with a G&G combat machine and a Marui.
Used both, and here's what I'd say.
G&G's are great. Reliable, easy to use. Great starter. Think of it as a nice Corolla.
Nice VFC's, Marui's etc etc are a nicer car. Like a BMW, more expensive, but nicer to drive. Both will still get you from point a to point b. One's just better at it.