Based on my extensive experience, very few men give head that can get me off. I've seen thousands of erotic massage clients.Many want me to get off but their technique would never ever get me off. For me, the only head that is stimulating enough to get someone off reliably is sucking while jacking. My bi clients never do that with the exception of one in over 35 years. Gay clients, maybe 15 percent and none in years. The only places to find truly knowledgeable cock suckers is at the parks or baths where you run into guys who do lots of head and know what they are doing. Alas, I never go those places anymore. Last time I came from head was the baths in Chicago 12 years ago. Very few pornstars ( why is this not a single word?) know how to do this and virtually the only ones who can get a stud off without the stud having to jack off use this technique, such as the Military Classified guy and the only 2 guys to get off a stud at Chaos Men where the guy came in the suckers mouth. Deep throat is a sexy idea, but the mouth rarely alone can give enough stimulation compared to hand and mouth plus teeth are an issue usually.