Filters I use:
Whisper 60s-Great filter my favorite HOB in fact. The filter floss lasts a good wile and is super easy to clean. Plus you can pack them with what ever you want.
Penguin bio-wheels- Can't stand these things!! The filter pad is garbage, forces you to use carbon unless you cut it open, It clogs all the time, is a PITA to clean, and the wheels constantly stop spinning.
Cascade HOB - don't laugh the Mrs bought it. These things are a POS don't buy them. Nuff Said.
Magnum 350s- Very good filter, little bit extra effort to clean but work well. You do have to keep an eye on the flow because of the filter media it uses (a spongy type pad) it is prone to clogging. (rip plecos
)
Fluval 204/304/404s- another good canister filter,great gph but like all canisters a little extra effort to clean but doesn't need it as often. Bypass is an issue but can be fixed by cutting a filter pad to fit snugly on the inside of and between the trays.
Ehiem wet dry- I forget the model but it's the big one. This is another good canister the only complaint I have is I wish it had a lot more flow. 100 and summin GPH just doesn't seem like much a 75 gal much less on the advertised 130 gal capacity.
Home made and store bought sponge filters- can't beat them for fry tanks.
Box filters- another good choice for an area of tanks that is powered by a blower, but kind of a pita to clean.
Home made internal power filters- these are great in smaller pleco breeding tanks where current is essential. Also a kind of a PITA to clean.
There ya go, filters by Pure.
Oh yeah, I'm stealing Orions DIY canister idea but doing it with a 5gal bucket. Let ya know how that turns out.