Shameless self promotion: I have an ICS mx5 a5 (MP5) for sale in the guns for sale section...
But yeah JG make a good G36C, but I would have recommended a SRC Gen 3 G36C as they are usually cheaper and are as easy to run as the JG. Both though will need a spring downgrade to drop the FPS slightly to be legal for most sites (average at 350-360 out of the box from what I've read/heard).
The SRC G36's need a better hop rubber too, but otherwise they are great guns. Bear in mind however that internally they are not compatible with TM or clones so many upgrade internals will not fit. That said, if you get a Gen 3, you wont need any.