The 3Ks with the Baldor motors are almost as efficient as Darts, but get up to the higher flowing models and they can draw as much as 5-6 amps. Will all depend on model.....
The one I have I had to send in and have a seal put in but I bought it used and has been in service for 10+ years now. Very reliable pumps in my opinion, and the smaller ones are efficient enough to rival most pumps out there.