if you looking HOB you got the best AC (imo)
i can only buy fluval canister filters here, so i only have experience with them, but i do like them!
i use a combo of both when possible. on my 90, i have a fluval 404, a AC300, and a small "bubble filter" i made. on my 30 (brackish) i have a fluval 304 and AC150. then my other tanks just have AC's on them