Connord

if you're going down the midcap route i strongly recommend getting your hands on an odin M12 style speedloader, really good bit of kit. there are plenty of clones about although quality on them seems to be hit and miss (especially with broken handles), i got an original on release and it took 3 years to wear down the paddle, quick replacement and it's still grand.

the cyma platinum range seems to be the hot product atm for decent out of the box pewing, and should leave a little budget spare for mags and an odin.

The important thing to remember with airsoft is more expensive is not necessarily better.  Have a look at reviews of various gats you are interested in and find out everything you can before you buy.  Ask here as well, there is a plethora of info about all sorts

Specna Arms have release a new series with gate asters prefitted for only 200 ish might be worth checking out. Otherwise i would say the best brands i know are :Krytac, TM and CYMA PLATINUM pick from those what you like you should be good.