Airsoft, A&K Full Metal Mk43 Mod 0 or Echo 1 Full Metal M249 Para Trooper?

I just got back into airsoft about 3 months ago, and I'm needing a heavier weapon. I go through ammo fast, I don't mind carrying heavy gear and I need more accurate weapon any way. I would prefer a light machine gun (Heavy weapon) 400$ and under, preferably with reliable parts, good accuracy and a decent FPS and RPS. I was looking at A&K Full Metal Mk43 Mod 0 or Echo 1 Full Metal M249 Para Trooper. Both look pretty decent but I need to know witch is better. Or perhaps if there's another I have not heard about yet.