what is your favorite canister filter?

My favorite of those that I own is the Eheim Pro II, its a great filter and easy to deal with...but it was free. I don't know that I'd ever pay full price for a new one when I've had other brands that are significantly cheaper and seem to work just as well. As far as bang-for-the-buck, the Renas have my vote. Decent prices (well they used to be...haven't looked at them in a while), quick-disconnects, and lots of space for media.

For fluvals, I have a few running that are 10+ years old and starting to show some wear. They seem to be built very well, but they can be a serious pain to get primed, and I always get water everywhere when I open them. I'm guessing these issues have been mostly resolved with the newer models.
 
Eheim Classics....

Cant beat their efficiency and dependability.
 
Eheim 2262 would be my next filter to buy if I need one. It's a beefy filter, well made, lots of media space & customizable. The Q.D.'s are great & the filter is super quiet. Only downsides are it weighs a ton when full of water & the initial cost.

The twist - Eheim Classics are awesome filters. I can't say enough good things about them.:) Well, we were supposed to say something nice about the previous posters' choice of filter.
 
RENA XP3+. I've found them them to be reliable.
 

Beast filtration: double outlet force is perfect for creating/directing a current in the aquarium (which is desirable for my SE Asian setup). The 3 media trays hold a good amount of media. Self-priming function is brilliant and robust (as long as at least 2 gallons of water are in the filter). The unit also performs an auto-air ejection once every 24 hrs. Only downside is the large footprint and heft. It has a drainage port at the bottom, but I never use it and just consider it part of my weightlifting regimen.
 
Filstar XP4

The XP3 was/is my first/only canister. It saved me from a lengthly, nightmarish bout with H.O.B.s.....having said that, in all fairness, I have no frame of reference for comparison to any other brand of canister, so I figure the XP4 can only be an improvement on an already great situation.

I don't know much of anything about any other brand of canister, so I can't really say something nice about the previously mentioned, but I would eventually like to have one of each.....
 
Mag 350, see through canister, good power, easy to maintain.......:)
 
I don't know if they qualify but I like my H.O.T. Magnum. It is small and unobtrusive, gives decent circulation on a 48" tank. They also seem to do a better job than some HOB's do at particulate removal.
 
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