Well I sit with one magnum 350 and one eheim 2028.....
Id recommend either..... Magnum is defintely right for the price, certain websites have it on sale for 80 bucks right now. Its a smidge noisy, but the sound blends well when you have company or family, I only notice mine when I sit alone and critique my tank to myself. The only con of it is the cleaning/setting up.... Setting up isnt so bad, because you are pumped about having a good canister, and its no biggie to be patient.. Cleaning and replacing media is a bit rougher, because the media container is fragile and requires patience to get together..... Im sure I make it sound harder than it is. I wouldn't hesitate to get another, especially if price plays a small factor.
Second is the eheim 2028/2026/2128/2126.... The first two come without heaters, the latter have built in heaters. Add 120 bucks to the price of the magnum(another 20 for the heated versions.) This is the cream of the crop. All in all on a performace basis, I won't say it outperforms the magnum. It runs quieter, its just the same to set-up, easier to clean, less frequent cleanings, I think better quality product, easier to put back together, less worry about something breaking or breaking something while cleaning. Money no issue? This the filter for you.... And I guess speaking on a performace basis again... It holds alot more media, which also plays a role in the less frequent cleanings, and the way it holds the media makes it easier to clean and change, so yes it well outperforms the magnum.....
I can't speak on the other eheim products, but a 2213 is about half the price of 2217(i Believe.)
So If you are somewhat teetering between a $100 magnum(or similar) canister and a $220( or similar) canister... Split the difference and go with the 2217....
Good luck, theres plenty of good products out there, depends what you are into...
