Valvoline's MC-specific (& under $3 per quart) oils are available in 10W-40 and 20W-50 weights: they are JASO MA rated. If your new bike calls for these weights & this spec, it is certainly ok to use them.
Are there "BETTER" oils available? Sure. They cost more, too...
Delo, Delvac, LongLife and other HDEO's may cost less than the Valvoline and many swear by them in MC applications.
As for the synthetics, Amsoil, Mobile 1, Motul, etc. all cost more but should provide a meaningful benefit, whether it be better shifting or longer OCI potentials.
You need to use the SEARCH function, IMHO.
Cheers!