ok so i have a 135 gallon tank right now it has two aquaclear 110 filters on it. Which was for one 10 inch male midevil, now i have added a what i think is a female red devil about 4.5 inches so i will be wanting more filtration . My top three I have narrowed it down to are the xp3, cf-500uv,fx5 . What are your guys thoughts on it ? The prices i have seen is xp3 115.00 ,cf-500uv 150.00 ,and the fx5 i can get for 219.00 but there is tax for that one so it would probably be closer to 235-240 or so. Which is alot more than the other two... anyways throw me some ideas and personal experiences with these given canisters .