Hi,
I'm 58 and two years ago I chose the Illeal Conduit for four reasons:
1. Shorter surgery, less chance of complications
2. Quicker return to continence
3. Use of night collection system gave me a full night's sleep
4. I was told that if there was a blockage with the neobladder, I'd have to self-catheterized, which I was not about to even consider
Two years later, I'd say I made the right choice. I do sleep throughout the night. Initial experimentation with pouches, barriers, and seals led to a combo that works for me (visiting nurse was very helpful in this regard)--though I only get about 4 days between changes. I can do what I did before without bag interference. While the bag thing is not the most attractive bodily accessory, you get used to it. Outside of at the beach, it isn't much noticeable. I've only had two UTI's in two years, which I think is a bit better than had I had a neobladder--others here could confirm or deny that better than I.
Downsides are travel--I hate taking the collection bottle (embarassment if traveling with others; bulky), so I just make sure I set an alarm to get up once during the night. Also, you can get nighttime leaks if you toss/turn so much and pull pouch/barrier away from stoma. Finally, changing bag adds 20 minutes to your morning routine.
Best of luck in your treatment. Interestingly perhaps: I read a study when I was first diagnosed that said conduit, neobladder and pouch users were equally satisfied with their choices when given a quality of life survey several months after surgery.