Currently but will be changing soon:
Eheim 2180 Pro3
Tetratec ex2400
2 x Aquamedic PF1000 (for mech filtration)
I couldnt say with regards to the cleaning of them right now because Ive recently added the PF1000's which take up loads of debris, and the eheim is new as well. The tetratec needed it every 3-4 months.
WC's I try to do 25-30% weekly but im in the process of adapting it to around 50% weekly because I will be combining my tanks.