IMHO, AK 550 with twocylinders, 50+ HP and advanced technical features cannot be compared with
Xciting 500/ i monocylinder, 35+HP and more than thirty years old technical standards.
Of course this 500 is rougher, vibrating and has its own "soul", but seatcomfort, particularely for shorter riders like me are second to none.
AK 550 can also be customized, seat, handlebar, etc. but goes into €€€.