Mine seems to like both. It definitely prefers some thrusting, so I guess rhythmic pressure rather than steady pressure. It also likes vibration, but NOT buzzy vibrations. Some g-spot toys are really buzzy - and while my clit can take a bit buzzier vibrations, my g-spot prefers deeper vibrations.
Experimenting will be your best bet. But, remember too that not all women enjoy g-spot stimulation - so it isn't weird or strange not to like it, and it doesn't mean anything is wrong with you.