I use Promescent. Discovered it on Dr. Oz. Helps me go longer and I'm able to bring my wife to orgasm during intercourse now (rare event in the past).
You do get a slight reduction in sensation but this goes away after 4-5 minutes. Plus going longer, harder and faster is well worth it. Orgasms are really intense, also.
For anyone considering it, I suggest watching this video: http://www.promescent.com/about-promescent… or search 'promescent how to use'