G6R definately, I have owned both and still do own a G6R, although I can highly recommend either of your choices.
Crome 2 is really nice, smooth and easy to maintain.
Air consumption is an issue until you change stock settings, [dwell can be dropped right down] then efficiency is greatly increased. Easy to maintain and simple to use.
G6R, I am loving mine, little more kick than the Crome, but amazing efficiency, really light and great to shoot. Stock board is very basic but a Tadao USB board is now out, as well as other upgrades being available.