I’m an observer. On my current Cub I looked at lots of fabric jobs on working planes that park mostly outside. The winner for durability and lasting appearance was Stits with Aerothane, and that’s what I used. I have friends with Oratex and am fairly familiar with it. If you’re okay with how it looks? Roll the dice, see how it lasts. I can’t find any 20 year-old Oratex jobs to look at. I dismissed it because I don’t care for the looks, and I can spot Oratex from a long way away. To each their own.