Well.....what's your budget? I recommend the Mio, hands down. While it will be a somewhat big investment ($99 before any discounts or points) it will last a lot longer and give you a lot more satisfaction that the majority of cock rings out there, not to mention all the money you'll save on batteries (it's rechargeable.) I have a hard time cumming with most vibrators, and the Mio gets me off in no time. One of the best purchases we ever made for our bedroom.