Well i'm biased of course. But a good friend, before he moved, had your amp (MC402) and the S3.4s. The preamp was Cary SLP05 and the source was a Marantz SA8001. I've heard the system many times and it had everything you are looking for. I also lugged his MC402 over to my pad to try on my S3.4s (at that time I had a pass x250.5 and we swapped amps). It still sounded excellent and very captivating. I do not have any actual experience with the others listed. I did have Thiel CS2.2s which were the warmest of the 2.x lineup. Still though, the Dyns are much more of what you are looking for. All the detail one could hope for yet forgiving and musical at the same time.
Like I said, I was biased :)
Like I said, I was biased :)