An aimpoint is a great tool but a full blown scope is too much for an AEG. With AEGs your range is limited by the length of the inner-barrel and FPS (the limit is usually around 400 for outdoor play).
As for JGs, I currently run a JG HK416 and it's great. They're solid rifles and sturdy (although plastic). The mechboxes are good stock (and many actually shoot too hot stock) and the durability is approaching that of the more reputable brands with proper maintenance. In general, JGs are great for the price.