ExDancer
The prep was a doddle, nothing like the pain from that hosepipe they shoved up my bum. Of course I didn't see the size, I was curious to know whether they used different sizes for different sized colons.
I think we just have to accept that a small proportion of us do find it painful - and ask for better sedation.
It's bloody painful! I don't think it has much to do with the size of the scope but more the air that is pumped into your colon so the camera get get a clear view of the whole colon. Some people don't feel it and some do. There's no right or wrong answer.