This thing is amazing! I have had it for about 6 months now and every time it feels awesome! Dont tell the wife, but its as good an orgasm as having sex with her, and alot less work. No need to do any foreplay, just lube the tip and go at it.
Wife even named her "Jenn" after a co-worker of hers I liked, so when she wants me to get myself off she just tells me "go have Jenn tonight" and hears no complaints from me :)