The 1 HP uprated SuperPump (SP2607X102S) is actually a very small pump compared to many on the market today. It has a head curve that is lower than many smaller labeled pumps such as the full rated 1/2 HP Whisperflo. The Pentair SuperFlo full rated 3/4 HP pump (SF-N2-3/4A) is slightly smaller (lower head curve) than the SuperPump but has about the same efficeincy as the SuperPump. In fact, Pentair developed the SuperFlo series to compete directly with the SuperPump. Both the SuperPump and SuperFlo are great choices for pools with single 1 1/2" pipe runs.