I've had a few Jabsco VS pumps, never had one fail unless it froze. The "new and improved" on this one is a bunch of diagnostic functions - low or high voltage, high current, on too long, etc. The knock against them in the RV world is that some of the limits are set too tight, so you get nuisance shut downs. The one thing I'd really like about this one is that it shuts off after running continuously for 5 minutes or something like that, this keeps from flooding your boat with fresh water should a hose break.