My vote... Glacier. Ive never really heard anything bad about them. Ive heard some complaints on FASS, mostly on noise, but I do think they have a quieter pump now. Glacier is simplicity; if you happen to lose the pump on the road, catch a ride into town and you can buy one at most any auto parts store. Or carry an extra with you. Its, what, a 5-10 minute swap?? Cant do that with FASS. Ill be getting the Fuel Hoss from GDP, its a mechanical pump run off the balancer...