If you are having trouble holding back your orgasm during sex, or want to push out into very long sex territory, go for the Power+Spray. Any amount of sensation you lose will totally be made up for with a very, very long session.
The most helpful critical review
Not Much Power
This does not do what it says it does. It is a waste of money. It does have a taste to it even though it says it's tasteless and odorless.