For what its worth, I have been doing some checking on these 100% synthetic oils for pre-mix use. I am not, and never will be any kind of an oil expert, but from what I can tell, it appears that Maxima Formula K2, Belray H1R, Motul 800 2T, and the Redline oils are formulated from "polyolester or POE" basestocks while most of the other good synthetics are formulated from PAO (polyalphaolephin) base stocks.
From what I've read, the POE based oils offer the best lubrication qualities, while the PAO based oils, while still extremely good, are not as good as the POE oils. Esters (POE's) are cleaner burning, have more thermal and oxidative stability and reduced friction. They also have polar ends which chemically adhere to metal surfaces for additional film strength and load carrying capability. Their drawback is higher cost.
Even so, you can read all ya want, but common sense tells ya that actual observed use in an engine would be the best thing to go by. I have noticed that a few people are not really too up on this oil thing. I was riding the other day and talked to a guy with a brand new '02 Suzuki RM125 and he was using that SuperTech 2-stroke oil from Walmart and wondered if that was why it wasn't running as good as the day he bought it. I guess that could be blamed on the dealer for not educating him; its really not at all his fault for not knowing what to run.
From what I've read, the Mobil1 products are PAO based (including the MX2T pre-mix oil). This does not in any way make them any less than excellent products, plus I think they are lower cost (depending on the product) and somewhat easier to find.