Having my boyfriend circumcised

I am planning to have my boyfriend circumcised soon but I'm still quite confused about the different options (low, high, tight, loose) even though I did read a lot about it on the web. What I want to achieve is him being less sensitive resulting in longer and better intercourse for me and stopping him from masturbating as much as possible. Can that be achieved by a circumcision? And if so what style would you advise me to make him choose? I'd really be grateful for any advice about this.