It depends on your G-spot location and personal preferences. I do find it easier, personally, but there are others who prefer a basic vibrator or dildo. Try an inexpensive one to get an idea if they work for you. It might or might not do the job but you will have an idea if higher quality ones would work for you before you pay the price for them.
I personally prefer toys with a more subtle curve, but as others have said it's all about your anatomy! Get a few cheap ones that are different shapes and play around with them.