James63 the tonal balance on both speakers is very good, the Andra's have more heft in the midrange which is great on voice - which the Thiels are no slouch. The highs are smoother, more transparant, with a longer decay. The Thiels by comparison just a slight edge and decay much faster, like on cymbols for example.
Knghifi thanks for the info on your placement, coincidentally I found 38" from the rear wall works best for me, I have them 9ft apart center to center and toed in firing just behind by ears I can still see the side panels. They aren't nearly as fussy as the Thiels.
Jayctoy - you obviously know the Andras, I can't believe you don't like them for rock - maybe the II's do a better job?
Dev - I see what you mean, I can imagine how these speakers sound with really top shelf amplification!