PM sent doombot, you have the 5.1 and the dolby surround (or is it just stereo?) from 99.
That stereo mix sounds great, as does the 5.1.
I think it's fair to consider that everything done in 99 is canon, and the "going back" of the last Blu-ray is the DP losing his marbles. That probably goes for the sound too. Let's preserve the 99 master, the best way to experience Halloween, ever.