We have one. Along with her Hitachi it drives her up the wall. Best bang for your buck is build it yourself. Cost total was around $350. Looks just like the ones you see in porn. Whisper quite, fully adjustable. Uses Doc Johnson dildos.
Most we find are either full of ...... game players, married, or scared. The few real ones we have met, some we say no thanks as they get pushy. So the true respectful gentleman is a rare but good find.