I have an Eheim classic 2213 and a professional II 2224; I also have a Fluval 305.
The classic is a real pain to maintain because it has the inlet at the bottom of the canister. Life get's eaiser if you add a set of double taps to it. - very low flow rate and flow rate drops quickly over time. (no idea how much it was, from the 80s and still running well)
The Pro 2224 is quiet and very easy to maintain. Comes with taps built in and just feels like a nice bit of kit. (I paid £40 for it on ebay) - Nice flow rate, doesn't add too much current and flow rate doesn't drop very quickly at all.
The 305 is much bigger than it looks in pictures. Feels a little cheaper in construction than the Eheims but is doing well and the media layout, baskets etc. is very well thought out. Again comes with taps built in. - Really nice high flow rate. I bought it to turn over my planted tank and it adds a nice current to the tank. (£30 from ebay)
I'd recommend an Eheim Pro.