I was in a similar situation when I bought my camper from CW.
My CW had a lot of different sewer hose options, but based on the quality and items that were in it, I picked up the Valterra hose. After (3) months of solid use, I have been quite happy with the pick.
I have the 20 foot kit, and I end up using the full 20 feet about 50% of the time. I did try to go cheap and just got the 15' sewer hose support and should have picked up a 20' one instead. It's working okay for the time being.
https://www.amazon.com/Valterra-D04-...er%2Bhose&th=1
https://www.amazon.com/Camco-Sidewin...rds=sewer+hose