I just completed a comparison and posted my final conclusions over at Autopia and thought you guys might be interested.
http://autopia.org/forum/ultima/94557-ulti...hallenge-5.html
Above is the page (5) on which my test begins. It has occasional updates and pictures on the ensuing pages and ends on page 7. I was prompted to do a side-by-side when someone over at Autopia stated that Ultima was '10 times better' than OS.
If you don't want to bother, a precis of basic conclusions is that they are both good products. If you seal your car every three months, you'll save money using OS, although UPGP starts out slicker and may protect somewhat longer, an occasional wipe with OCW negates the slickness factor and probably the durability as well.
ufourya
