I think a lot of it depends upon how long you stay at any one spot.
Our previous coach had the Sanicon w/bypass and it worked pretty well. I really liked not having to disconnect it every time we moved and the small amount of storage the hose and nozzle took up. However, in the six years we had that coach, I had to completely disassemble the unit twice, both times to clean the blades and replace the impeller. Nasty job. It plugged up a couple of times, but I learned that I could put a female/female hose connector on the end of the nozzle and attach a garden hose to it and reverse the flow back into the black tank unplugging whatever was stopped up. When traveling, I really enjoyed the Sanicon...easy to hook/unhook and store. No fuss, no muss. It also provides you with a means of using the gray tank water to flush out the black tank.
For us, we spend a lot of time in one place and the negative part of the Sanicon is that it takes a lot longer to empty two 50 gal tanks than a stinky slinky does. When we purchased our new coach, I had previously removed the Sanicon from the old one with the intentions of installing in the new coach. Upon purchase, we brought the new coach back to our rv resort and stayed there for two months. Emptying the tanks with the stinky slinky took about a minute....big difference. So, I decided that since we typically stay in one place for quite a while, I would continue with the stinky slinky while parked and use the Sanicon once we were back home to clean the tanks (our sewer hook up at the house is about 100' from where we park the mh).
So (long story...sorry), my preference is stinky slinky while parked and use the Sanicon while traveling or winterization.
Hope this helps
Ron
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Ron, Sandie and Lilly
2013 Tiffin Phaeton 42LH 400 ISL | 2011 GMC Terrain SLT-2
Roadmaster All Terrain | US Gear Unified Brake System | Pressure Pro
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