JudasIscariot: If you still have them then Exult is your answer.
gyokzoli: Exult have a serious game breaking bug, and the developers have no clue how to fix it. You can read about it on Exult's main page.
I've played through all of Serpent Isle in Exult without ever noticing that bug. Of course, that doesn't mean everyone who plays will be as lucky, but it is possible.
If anyone tries playing in Exult, I guess the advice is: save often. (It is also possible to avoid the problem altogether, apparently, by disabling item creation schedules in the game, but I never did that.)
As for Ultima 9... well, it had its problems. But I must say, I still have the image of Moonglow at night etched in my memory. It would be nice to go back. :)