Whats better 4500flatline or Apocalypse2k

[ringmasta187]

I am looking around for a new top of the line HPA system for my RT. I was just about to buy an Air America Apocalypse 2k, untill i saw that AGD had 4500 flatlines. What i really wanna know from all you mag users is which tank you think is better. And if anyone can tell me, which one is lighter? Is the flat line worth the extra 65 dollars? List your thoughts, thanks

[FalconGuy016]

I dont own one but from the general opinion I get from reading stuff here on AO the flatline is amazingly amazing

[LawFox32]

ok I used to have a 3k flatline; and now I have a SS apoc, so i think I have a good worthwhile opinion on the subject;
in my case the flatline got better flow and had a faster recharge, worth 65 bucks, well if you are buyin a high-end air system, might as well get one that will give top performance