I'm currently using a pair of 600 S3 speakers as temporary rears for watching HT. I am thinking about getting a pair of DS6/DS3 to wall mount, but I can't compare which series, S3 or S4, matches the Nautilus series better. I would like to know which series of 600 series speakers would be a better timbre match for a HT setup consisting of Nautilus 805 and HTM-2. I am looking at either the DS6 S3 from the 600 S3 series or the DS3 from the new 600 series. Those are my choices mainly because of room limitations. I know it's a very small target group who will be able to answer this, but from the two series, which of the speakers do you think is a better match for a HT setup with Nautilus 805/HTM2? Thanks everyone.