I've had the versed and demerol for sedation and pain when I've had them done. I've had 3 colonoscopies and the first 2 went fine, but on the third I woke up in the middle of it and oh my god was it painful!!! I asked the doc for more meds and he said "oh we're almost done"!! I did go back to sleep or whatever, but I definitely don't ever want to take the chance of waking up during one again!! But it sounds like you were awake during yours so you may have a better tolerance than I do for these things! I've never heard of general anesthesia, and even talking to my mom who is an OR nurse at a surgery center where they do this sort of thing every day said they usually just use Versed. I guess every doc is different but I'm sure if you voice your concerns he'll be receptive.