The RP-M is our own branded pump. That way we can offer an extended warranty (18 months), along with better support and distribution. The problem we run into with a lot of the coralbox and jebao stuff is that other sellers on ebay/amazon offer them without any warranty, which tends to make the whole brand look bad, regardless of retailer. By carrying these under our name we can control who sells them on eBay/Amazon, and make sure that every one of our customers receives the excellent service we strive to offer. We will still be offering the coralbox version with a 12 month instead of an 18 month warranty for a slightly lower price.