Best Airsoft Gun to get for 120 or under?

I have been trying to buy a good air Soft gun and i was going to get a CYMA cm028 but i cant find a accurate FPS for it i have had answers like 400 fps to 280. So ive decided to just see what the best air soft gun i could get for under 120 dollars is. It could be just about any kind but i would like one that is reliable and has good FPS. Also if you could tell me what the FPS would be for each different types of gram bbs that would be great. Thanks for all the help!