Lexi03 and I are anxiously waiting for our tax refund to finally purchase the filters for our 125g and get it running. We were thinking on going with 2 sunsun h 304b's, but ebay doesn't have any, and the website I found them on originally is out of stock till next month. I don't know if I can wait that long. At $100 a filter, we were real excited about the price on those. All the other comparable filters are at least $50 more a piece. Lexi and I are gonna talk when she gets up, hopefully she will agree with me to look at other filters now. I don't wanna wait another month! Breath, ok. I have been online comparing prices and reveiws for the last two days. I am considering now either 2 rena xp3s or 2 eheim 2217s. I'm leaning more towards the eheim though. We have, I beleive it's a 2215, on our 75g tank. We bought it used, and it is still silent after having it for over a year now.