Recommend a good RV Cover for 28-29' TT?

I use anything I can get cheap on eBay that has the white Tyvek on top. I’ve mostly used Adco. They can get expensive if bought brand new but I’m always on the lookout for an open box item(not returned) or maybe one that has some cosmetic damage on the box. My twenty year old 28 foot fifth wheel has used travel trailer and fifth wheel covers. Whatever I can get in the 28-30 foot range. For us in central california the UV damage is what I’m mostly trying to prevent and thus far it’s worked great as all my decals still look great and I still have an intact white rubber roof. Rain and snow is not an issue here usually. Once the Adco cover I bought had a date of manufacture of 5 years earlier but was still in it’s original shrink rap and worked fine. I usually get 2-3 years of service before the cheaper grey sidewalls start to deteriorate and have usually paid around $200. Keep a lookout in advance of when you actually need it. For example, my current cover is wearing out after 2.5 years but I already have one in the garage that I bought last June. I’ll probably replace the old cover with my “new” cover next spring as the UV intensity increases.