Anybody heard anything on Cascade filters?I have use marineland,fluval,emporer w bio wheels in the past with no problems. I just got a new 45gal tank which I will be setting up soon and would like to try something new. Now that I sold my 55 and starting from ground zero I would like your input on this filters I also like Eheim but don't know how good they are since everyone has had a 50\50 love hate relationship with them. and from what I read so far Rena xp is the way to go.......... is this right?