My first AEG is a KWA G36c, simply because I've always liked that model. Had some trouble finding a vest that can hold the magazines (biggest mags out there, you can fit two M4 magazines into the same pouch I put one G36 mag) but nothing major.
I've had it for three months now, but the gun itself is a little more than a year old. Gamed it only once so far. After some hopup adjustments it shoots hard and straight. Great solid gun. Cant compare it to my other AEG because this one is my 'outdoor' gun and the other is my 'indoor' gun!