theyre a great filter that i've heard alot of people say good things about. im getting one eventually (was going to with taxes, wife found other 'needs'). The fluval line of filters is great. I love all of mine. They're super quiet. The guy i bought my 150g off of had one on it along with a 405 and swore by them. The fluval, eheim, and rena filters are probably the 3 most popular filters you can get.
"What, exactly, is the internet? Basically it is a global network exchanging digitized data in such a way that any computer, anywhere, that is equipped with a device called a 'modem', can make a noise like a duck choking on a kazoo." - Dave Barry