Tha CPR is far better than Seaclone. I have had both my first was the seaclone it was a waist of money. The CPR work well with smaller tanks and needs no modifications.
Go with either the cpr with the maxijet1200 or the remora pro with the maxijet. However,I would add a hundred or two and get a quality,high end skimmer. It will save you money in the long run.