Variety is the spice of life and with a big selection of different types of vehicles, this idiom definitely holds true for Wltoys radio control.
It is a good idea to get an idea as to what interests you more. There are vehicles that walk the line between scale realism and high-performance like the Off-Road On-Road Radio Control RC Car Buggy line of trucks while there are vehicles at either end of the spectrum and everywhere in-between.
As you start your search, the field of vehicles can be narrowed by dividing them into two basic categories, on-road and off-road. On-road cars are purpose-built to drive on flat, paved or concrete surfaces. In this category you can find all types of realistic-looking vehicles like production and race cars, commonly called touring cars, along with formula one, rally, dragsters, drift, semi trucks. On-road is perfect if speed is your goal and/or if you want to hone your driving ability.