I wish I could use toppers, but I just "can't like them". I got a Sleep Number mattress 18 months ago to replace my original mattress. I should have bought it the very first day I owned the Designer. Great mattress and lighter than the original as well.
2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch
2010 Jayco Designer 35RLTS, Cummins/Onan RV QG 5500 EVAP, Progressive Industries EMS-PT50C, TST Systems 507 TPMS, RV Flex Armor Roof