I just received the super deluxe edition and have been listening to it. Initial impressions are that the CDs have been cleaned up quite a bit. The guitars pop and Mick and Keiths vocals are clearly out in front. They arent as murky as the Virgin remasters. Whether thats a good thing or not is subject to debate. Bob Ludwig did the Virgin remasters, and I GREATLY prefer them to the latest batch of remasters from Universal, which are totally compressed and bright beyond belief. What a disappointment! But this Exile is different. It doesnt sound really compressed, just cleaned up. Personally, I think the Ludwig remaster comes closest to the original intent, but this one allows you to see the instrumental interplay to a greater degree.
I also liked the bonus tracks. Not essential, certainly, but interesting nonetheless. The packaging of the super deluxe box is also really nice. I had to have it, as "Exile" is in my top five of best albums of all time.