When comparing a euroreef 8-2 to a myreef m2 the euroreef is probally gonna skimmer better. But not by much. But you are comparing an 8" skimmer to a 6" skimmer. Euroreefs are good skimmers but the pumps they use aren't that effient. they just use smaller pumps. I've seen many euroreefs . I don't like sedra pumps. But if you think of a skimmers its a piece of tube. the bigger the pump the more bubbles you will produce simple as that. ppl use Euroreefs withpout needlewheels and haven't notice any diff. Which makes me think you can diy any pump on one.