I've been running teh Facet Dura Lift( I.E. Carrier ) pump longer than anyone , it's been on there almost as long as I've had teh truck now, and it's never given me a lick of trouble, but it does make sense to have backup for long trips, thats why before taking off cross country with the 5er a couple years ago, I bought a second one and plumbed them in to where each tank has it's own pump now so the system is completely redundant and switchable, so when I switch tanks, I switch pumps, and heaven forbid, a pump ever fails out on the road, I'll just use teh other tank