Ok, at the risk of getting shot down here I'll go ahead and stick my neck out...again.
I have a 120G fresh running a Hozelock pond filter. It's rated for a 500G pond. I got it cheap - as a closeout. I'm running a Genx4 pump pushing the works. Also have a Gamma UV, mostly for convenience. Does help with keeping things clean as I have a difficult work schedule that does not allow consistent tending.
I did mod the filter by removing the third foam layer as I didnt think it was necessary. I also, at one time, made a stainless mesh tray to run a layer of charcoal whenever I felt I needed to. Otherwise it's running as is.
I've had this system for several months now and I love it. After weeks of researching filters, how they work, comparing, talking to folks and just general reasoning, I went with the pond cannister. No, it doesnt have all the bells,whistles and spinning wheelie things but all my params are great, my water is crystal clear, fish seem happy and I have no regrets.
I have tremendous respect for Doc Joe and Wolf so I'd like to hear your pros and cons. If there is something I missed in choosing this setup please feel free to express. You never know, I might have overlooked something.