relate oil to marine 2 cycle oil
I own a nice bass boat with the HPDI Yamaha 200 hp motor. You have to fill the 2 cycle reservoir with oil... you can buy Yamaha oil for a zillion $ per gallon, or other after-market oil for 1/2 a zillion $ per gallon, OR WalMart oil for $5-$6 a gallon. Sure, I want that motor to last forever (they cost $18k just for the motor, not kidding...) but if you look up the specs in regard to what meets the standards, WalMart oil is on the same list as the expensive stuff.
2 years later, with nothing but WalMart $5 oil, the motor is as new.
My diesel VW requires 505.01 spec oil or you WILL void the warranty, and that spec comes in several brands. Yes, I'd swear I can hear a difference in the engine tone/volume with Elf (for instance) vs. Castrol... but if I change it on time it makes no difference.
So... IMO, if the motorcycle oil meets manufacturers' spec, and you change it on time, it doesn't matter beyond personal preference.
MCL Risers, grip puppies and throttle boss, that's it. "as is" is great.
V-Strom 650 K8 (sold - great bike tho)
Flat Black #117
Wee had: SuperBrace; Sonic Springs; MadStad (MP Cycle Grand Touring); Nelson-Rigg 850's; Bestem Top Case; Grip Puppies; Kuryakin Throttle Boss; Stebel, OEM HandGuards