Since you mentioned Motul, I have researched their oils a bit and as best as I can tell they make very good oils. They make some ester and double ester based oils, these are the probably the best bases for a motorcycle oil.
The "Motul 300V Factory Line" motorcycle oils are fully synthetic and double ester based. They have a 10W40 and 15W50, the 15W50 is the better one, it needs less VIIs (viscosity index improvers) than what is needed for the 10W40 oil. This means there is more of the good stuff - the actual oil. If you're wondering how to tell, since 10W40 and 15W50 looks almost the same: divide the last number by the first number, eg. 50/15 = 3.33 and 40/10 = 4 (lower is better.)
Motul also makes an ester blend based fully synthetic motorcycle oil labeled 7100 4T. You can get these in 10W40 and 20W50 (50/20 = 2.5
)
I'm impressed with the quality of oils and if I can find them for a good price I'd use them without hesitation.