best MP3 music controlled vibrator

need some help with this, want to get my OH a vibrator where the patterns are controled by the beat of the music, ive looked up the OhMiBod and NaughtiBod but reviews seem to state they dont have much power and i also cant find anywhere in the uk to het one anyway, but she loves clitoral stimulation and shes loves power so if anyone can help me, its about time lovehoney done an MP3 version of there wand deluxe i think :)