I prefer the look of the denim to the vinyl, however I will never buy the denim again. I had a wheeling trip where it snowed and rained on me, and the porus material of the denim allowed water to seep through the material and get my sleeping bags/gear wet. Water was literally seeping through the material, not seams or stiching.
So what top do you have? How long have you had it? We ask because there is not a difference between the vinyl and the denim material. It's just a look.
“Two ply composite made of PVC (Polyvinyl chloride) outer layer and a polyester/cotton lining fabric.”