To date, the best I've heard 'In The Court' sound was on the 2010 vinyl reissue.
As for the Steven Wilson remixes of the catalog, I have not yet heard the surround mixes and have only heard 'Red' in Hi-Rez format. In general I think the Wilson remixes are 'cleaner' sounding but they are also a bit drier compared to the originals, which is not really my thing, but it's always interesting to hear these albums from a different perspective.
Of the 70's era Crimson remixes I've heard so far, 'Starless' and 'Larks' are the ones I like the most.