I have noticed some machines. The issue is it is difficult to know what it is like. I went into www.orgasmalley.com and discovered one called the Stallion. It certainly lives up to the title, but it lived up to all of the testimonials. It was amazing, hitting the rhythm and stroke. It sent me into some really deep orgasm and was my puss juiced up in almost no time. This little beauty is going to soon be parting my lips!