If you want to stimulate the G-spot then a vibrator designed for this pupose is the perfect choice. They are known as the G-spot vibrators. It does not matter if you already know that you enjoy G-punktsstimulation or if you want to test for the first time, the obvious choice is to buy a G-spot vibrator. Basically it is a vibrator with a bent end or top, designed for this purpose, i.e. to access and stimulate the G-spot. To give good stimulus they are often a bit stiffer and does not bend when one increases the pressure. It is also common with G-spotstimulators that also stimulates the clitoris at the same time and it can be a good choice for many.
Since the G-spot is located 3-5 cm in on top of the internal vaginal wall so the curved design is optimal in order to find and stimulate this erogenous zone. Of course, the placement vary from person to person and not everyone has managed to find his G-spot. One could also say that it is not a spot, but a certain part of the vagina.