@Megha I think Sigmoid Colon due to the natural lubrication
Deepa You are right about sigmoid colon being more invasive due to the incision. With regards to the recovery, I am pretty much okay now, and I went back to office on day 18 post-op, which is much earlier than most of the people who have had just a penile inversion technique. It's true that recovery time is different for anyone, but given the circumstances, I have noticed lot of people recovering quite fast with sigmoid colon vaginoplasty.