I tried, Castrol Active, Caltex, Zic, Repsol.
Repsol is a good oil but I think not suitable for this bike. Ride became heavier in long routes.
In the end I have found Shell (the common 0.7 liter red packing) the best. The mechanic advised me to go for it. I have done 1000kms so far on this oil and it is still in good shape both color and viscosity wise. I got changed it after 1000kms.
I fell comfortable, light ride even in long routes. I would like to recommend Shell and then Castrol Active.