Just my 2 cents: I've got a Marineland C 360 on my 75g (also with a HOB for backup), and the flow is awesome! I do have some suspended particulate, but I mostly have bio media in there right now and lots of floating plants that were getting a little beat up from the powerhead. It's better since I removed the powerhead. The flow is still awesome without the powerhead.
I've only had the canister for about a month or so, and I got it used. So far, though, it's awesome! I can't believe it took me so long to change over from power filters.