Fatboymoe, I think you are just about right. You listed up all the brands I would considder to use in a bike. After seing drops in temperature(10-40fahrenheit) on several harleys, when shifting from Harley-oil to Royal Purple, I understood that it is important to chose the right oil. At least if you care about the engine. I think you should, because the engine is the thing that brings you forward. I have seen several articles here on BITOG,where members are only interested in the price of the oil. Many members think it is smart to save 12 USD on a oil-change, and because of that, having to buy a new engine within 5-6 years that costs 2-4000. In fact, using a high quality synthetic oil, actually saves you money(and time). If you also use the oil brands you listed, your engine is getting the best protection possible.