Wolfram_von_Thal: Sure, smooth scrolling is a fine thing, and so is the additional "keyring"-quest, the new interactive possibilities (making butter etc.), and the lactose-intolerant Iolo ;) - still I really really miss the complete schedules (smith in Minoc for example) and the correctly working lighting-system, two very unfortunate immersion-breakers for me. Some sounds don't work correctly too.
So I've played Ultima 7 with Exult (with an overall good experience) but I'll play it without the next time. There is a "going back" at least for me. :P
However, the work the guys are doing with exult is outstanding, that's out of question.
IIRC, you could make butter in the original one. I'm reasonably sure my party defeated the fellowship on a steady diet of nothing but butter!