The famas is one of the oldest AEGs out.
Some really like it, but when compared to other AEGs, its really not a bright star.
Unless your forced to by price, Id stay away from the famas. Compared to other guns, its body is weak and its internals are nothing special. Its a version 1 mechbox whereas a G36 is a version 3.
If guns were cars, the famas would be a chevette and the G36 would be the corvette.
I highly recommend a G36.
check this thread
http://www.airsoftcanada.com/showthread.php?t=27739 on what people recommend as the "best aeg", its a great thread with lots of info.