If you want more power please go for Activa 125 else Activa 3G would be a better option based on the price as well as fuel consumption.I own bothe this one as well as Activa 3G.
The power and pick up of this mopet is excellent because of its 125 cc engine.I purchased the deluxe version which comes along with disc brake.
After 2 months of usage the mopet started giving very less mileage somewhat 30 to 35 kmpl.All the plastic part near the handle part and speedo meter area have been loosened.They always vibrate even in slow speeds.
I felt the difference when I purchased the Activa 3G.In comparision to Activa 125 its engine is butter smooth, light weight suitable for persons of different age group, fuel efficient and price is also very less.