Suzuki and Ducati, as i like sweet sounds like Moto 2 and F1 cars by muscle sound V8 super charged sounds pretty heavy i like it, but best in the world all 600RR class is sweetest and best sounding availab.
Slav Butt and next season is the last season moto2 will use the Honda CBR600rr engine as the contract expired, and they will switch to Triumph 765cc 3 Cylinder engine in 2019 season