Best quality,probably Ehiem,although Ive never had a problem with either of my fluvals.Best price,definetly fluval.Best rep.probably Ehiem.I'm sure all of them have thier positives and negatives.I wonder if anyone has done a consumers report on aquarium filters?Just because a couple of people endorse something doesnt make it the "best".Subjecting it to a battery of tests would be a better judge of which one is really the "best",including cost efficency.