Echo 1 G36C or Echo 1 M4A1?

I really like the look of the M4 and the iron sights seem to be better. From what I've read, the M4 has better range, while the G36C has better accuracy.

I will be playing in a "wash" in the desert. Both guns are very compact, so that really isn't an issue. The farthest I will be shooting at is probably 130 feet max. The field is all desert with bushes and small trees with few leaves.

Please post the answers to the following questions.

Best range-????

Best accuracy-????

Most power-???

Best battery compartment- ???

Easiest to field strip-??????

Most durable- ???

Best iron sights-???

Best design-???

Overall best gun-??

And finally, where should I purchase the gun? (I was thinking AirsoftGI)

Thanks for the help, I appreciate it