Wow, I see now why there are 100 views and no replies, this is a something only someone with more understanding of the situtation can answer. I hope you find some helpful replies soon. I don't know enough about the two to say anything. I will say a prayer that you make the right choice.
Personally I wouldn't recomend the internal pouch, the stinging and rawness after each bowel movement was unbearable, I dreaded going to the toilet. I put up with it for many years because I really didn't want the inconvenience of a stoma bag, but in the end had to give in to it.
I still have the internal pouch, it was 'disconected', but frequently I have a mucus discharge from my back passage, which can be a nuisance,overall I am pleased to have the stoma, (9years now.)I only get sore on my stomach if I have a leak, and this year, so far, I have not had one, the last time being just before Christmas. This is the longest I have gone without 'trouble'.
Thanks for your reply Pottinger, it's good to hear your views as someone who has the Indiana Pouch.
One of the problems the surgeon mentioned I might get was that some people who have the IP made get what they call 'short bowel syndrome' after they have some of their bowel made into a bladder and they get dreadful diarrhoea and mucus. It sounds like you are one of the unfortunate ones that suffer from this.
Sometimes it's best to stick with the devil you know.