^ I think by default most urologists/surgeons do a "low" circumcision because its apparently the easiest for them to perform and most likely the way they were trained to do it. Men that claim to lose sensitivity after circumcision I will almost guarantee you that they were done "low". Just think about it, the inner foreskin is sensitive whether you have foreskin or not, so if you were to remove that and replace it with the outer shaft skin then of course its not going to be the same sensitivity. The outside of the foreskin is not the part that feels good, so when its done like that the inner skin is replaced with the outer skin.
This was a big factor in my research before I talked with my urologist. I made sure to get it done high/tight and I'm still pleased with the result many years later. I'm not any expert in how circumcisions are actually done, but I do believe all standard adult circs are done by removing a "strip" or "ring" of skin, then rejoining the two ends with sutures. I have read about many guys now getting it done with clapping devices that don't require sutures, but apparently there is more aftercare. I have no experience in that so I'll let someone else who has had it done that way explain it better (seems to me this is the same method they use on infants). I'm actually really intrigued by that method, and if I could go back in time I might have brought it up with my doctor.
Since you are considering and wondering about sensitivity, I will try to share my honest experience. Getting it done with inner foreskin retained its very much like how it is when your foreskin is retracted. The glans do get used to exposure but I'm not sure if I would go as far as to say desensitized. I do remember when I used to take showers the water hitting the glans would tingle, but now it is very much normal and nothing worth noting. Again, speaking for myself, I don't think anything really changes pre/post circumcision. Many would claim its a world of difference, either much better or worse, but from what I've noticed by reading many other men's accounts over the years, almost everyone says there is no big difference and not diminishing in any way.
Another thing to consider is the option to keep or remove your frenulum. I believe if you remove the frenulum you are able to get a much higher cut, and in my opinion it looks better. Another thing I was concerned about was the veins in the foreskin/shaft, and I have no way to explain what really happens but everything seems to re-route in a natural way. Just a theory, but instead of blood flow going to the foreskin, after circumcision more blood flow goes to the actual shaft.
I hope this helps. If you have other questions ask away.