Meh... Had very bad experiences with marineland canisters pissing all over my floor as well as flat out dying on me. Never again. Kept me away from canisters for years until I decided to give an eheim classic a shot. Eheim clasic: simple, dependable, durable, reliable, effective, etc... How often do you have to maintain your canister anyways? Come on cleaning the classic isn't hard at all. After you prime it the first time, that's all. Quick disconnects make it so you don't have to do it again (unless you need to clean the hose). Sucking on the tube is not hard either... I get have a couple nets laying around, dump the substrat pro in one and rings in another. Rinse all that stuff out, put it back together, and im done. How much harder is that? I don't see no superiority over the classic in fact far from that.
To the OP: If you already got a canister the aquaclear 110 is a great idea with only a 100$ budget. For a 100 gallon tank a FX5 would be an affordable yet great option if you could save up the $.