This is my second AEG that I have purchased from Airsoft GI. My previous model was also an Echo-1. Overall, I am happy with my purchase. The stock does wobble a bit, but that isn't a problem for me. Also, when I received the gun, the dust cover latch was broken and could not be secured. I called Airsoft GI that day and they shipped out a replacement. No questions asked, no hassle. This is why you should do business with these people. I taped the latch closed and had my replacement in a day or two.
The ROF of this guy is pretty good given the size of the battery it comes with. It shoots straight, I have not had to touch the hop-up. I will be upgrading to some Magpul parts (hand guard and pistol grip), but not because the stock ones are uncomfortable. The weight of the gun is very good. If you think it gets too heavy, you need to go to the gym. :)
ROF is very good out of the box.
It just "feels" like it was constructed very well. Nice weight, and it doesn't feel cheap.
Easy to change things if you want to.
Stock wobble, but what AEG doesn't have this?
Dust cover latch broken, but was replaced with no hassle.
While doing a takedown of the gun to clean it, I had an allen key bolt break off at the head. I believe this to be my own fault, because I have the strength of 40 men. However, you might want to be careful with these bolts, and don't tighten them too much.
Rating: [5 of 5 Stars!]