I prefer to use a dildo in combination with my hand on my clit. I love my buzzy toys, but my best orgasms occur when my muscles have something to clench down on.
I prefer a dildo I can thrust with, or I don't get the stimulation I like to get the great, satisfying orgasm I need. Vibration doesn't really do much more than numb my clit and make it IMPOSSIBLE for me to finish.
I like them both, just not together. I don't care for those toys that have the lil bullet that sticks upward to hit the clit. Those things never "fit my body" right. The bullets are either too big, too small, too high or too low to hit "just the right spot".
For masturbation, both is best, but sometimes one or the other when the mood strikes. If I'm travelling I just take my clit vibe since it's more discreet. With a partner it varies widely. Sometimes no toys, sometimes lots, it really depends.
I like the combo of having something to "clench" on and clitoral stimulation. But if I had to choose. bullet. I'm hoping with practice I can achieve orgasm with just a dildo... It works with just a penis, it should be possible...
I don't *need* a vibrator to reach orgasm, and it doesn't even really enhance the experience, it just makes it happen faster and more easily. So I chose dildo.
Going through a phase of not liking vibrators much, so have to say dildos. I used to prefer them both at once, but lately I just stimulate my clit manually while using a dildo.