I recently purchased the Laya Spot and found I didn't really like it. I got it for use during intercourse and by myself but it doesn't seem to work well for either. So far the only ones that work during intercourse for me (and this of course depends on the position) are the Hitachi Magic Wand and a bullet.
The laya spot:
LayaSpot / Clitoral Stimulators / Vibrators / Vibrator.com