The 150 has a top speed of 107 km/h. It's a governed top speed. The Yamaha SMax is not governed and I see people often topping out at 120 km/h+, about the same as your old Elite 250. Both the PCX and SMax climbs hills at roughly the same pace maybe 80 km/h up a 6% grade. The new fuel injected water cooled 300 scooters top out at 140 km/h.