filters
If you don't mind having a filter hanging on the back, I think the Emperor is a superior filter. I have used them for years and have never had any trouble with them. The Bio Wheels are great too...very efficient. But...you said this was going to be a planted tank. Will you be adding C02? If so, I think you would be better off with the canister because it will cause less surface disturbance. Anything that churns the surface will cause you to lose the C02 you are trying to keep in there. I also have an old Fluval canister. It has been a good piece of epuip also. So, if you're going to have C02 injection, go with the canister. If not, and you're sure you don't want to add it later, the Emperor would be my choice.
Logan J