Hi,I've just pulled all the sanitation hose (1.5") out of my boat and now need to put new stuff back in.I follow all the guidelines: no low spots, flush a gallon or so of fresh water through the system after every trip, then pump out, then flush a cup of vinegar.Can anybody tell me based on personal experience how long it takes the various hoses to pass odours? I know the really good hose (AVS96, Sealand OdorSafe) is $5 to $9 a foot. The cheap stuff (148 series PVC hose) is $2.5 a foot. I'm trying to get a handle on how long between replacing hoses I can go with the various hoses. In the archive I saw mention of hoses "failing" (from an odour stand point) in 3 to 5 years. Is that the time frame expected for the 148 hose, even following the "best practises"? And would the AVS96 hoses then last 10 to 15 years? Feedback from experienced noses is appreciated!Thanks,Craig