I've been looking at these as they seem to be a good balance of everything I want from a GBBR but so far it's all been mag dumps at indoor ranges, no one showing how it actually performs.
As for op, a ngrs is a bloody expensive gun to have as a backup to your backup. I'd say get a cyma MP5 or something else cheap, compact and lightweight to have in your kit bag and spend the difference on more gas stuff.