I got my Wilson W/P8s 2 weeks ago...also heard the Kipods (hedgehog) Studio with it's subwoofer for a few hours, in a friend's house.
My impressions are (I heard tham in a different room/geer/time), that the Kipods are more accurate, transparent and have more details than the W/P8s. The soundstage in the Kipods is lower and more laid back, Still more 3D and they are more disappearring. The bass in the Kipods is fast and quick, but lack some punch, slam and attack in the mid-bass region (50- 70 Hz). The Kipods fit to smaller rooms than the W/P8s. They are less efficiency and need SS amp with rated power of 200Wp/c.
The W/P8s are warmer and sound to me a little more musical with ARC REF3+ ARC REF110, than the Kipods with Krells electronics (SACD Standard+ KAV 400xi). They have ability to play in a very loud SPL without any felling of strain. The bass has more bottom-end, dynamic impact and deeper extension. The W/P8s are speakers for all kinds of music. the Kipod sounds best with small groups or jazz music, but less good with electrified rock or big classical orchestra.
I think both speakers are excellent.
BTW, the Kipod now in mk II, the price has gone up $4000 to $42,000 USD per pair.