I have multiple Danner Mag-Drive Supreme Pumps in varies sizes ranging from 2,250 through 3,600 GPH . I only use these pumps, I feel the are the best for me, and produce very little heat and noise. Most of the pumps have been in continuous use since 2001 and some are in 12 hour start and stop loops. I have only had one freeze up because the impeller magnet exploded. The replacement part was easy to get and replace. I used to use the Little Giant pumps but they produced lots of noise and heat and some of them leaked both air and water.