What are you planning to use the gun for primarily and what are your priorities for functionality?
I don’t have any experience with either of the specific weapons you mentioned, but have used AEGs and GBBRs extensively and they are very different animals.
GBBRs have the advantage when it comes to realism of operation, better sound and recoil impulse, but have higher running costs and lower ammunition capacity (gas is a consumable and you will need more magazines due to the lower capacity). I prefer them to AEGs just because of the realism, but if you are doing a lot of walk on skirmishing you will be restricted to mainly semi auto only and can feel outgunned by the AEG wielding masses.
AEGs are cheeper to run, have a higher ammunition capacity, higher rate of fire and are generally available at a broader range of price points than GBBR, they also need less frequent maintenance. This comes at the cost of realism of operation, noise If these things are not your primary concern then AEGs can be a good choice.
Ill briefly mention trigger response, as someone is sure to mention that GBBRs have better trigger response. Generally this is true due to the way they work, but with the right upgrades a mosfet and precocking etc. AEGs can have a really sharp trigger response, sure it won’t be GBBR sharp, but unless you are doing serious competition style shooting it will be so close as to make no difference. Again the question is how much does that matter to you (and if it does are you willing to spend extra money upgrading an AEG).
