i have a 2001 dodge 3/4 ton qaud cab 4x4 with 55k miles and need to replace the shocks.we tow alot [camper with boat,tractor,sleds ect.the question i have is should i stay with a high qaulity gas presurized [bilstien] or go with a rs9000 adjustable rancho???are there any other brands to look at???what do you think???i think the gas shock will give a better ride qaulity but will not have any adjustment??