I've heard the 602's quite a bit - one of my friends has a pair of 602's and we always have arguements over which is better and why. I really dislike how muddy they seem (at least to me).
I did however also hear the nautilus 801's (that another friend's brother has) coupled with a nautilus htm1 center and nautilus 805 rears with 2 Adire Tumult drivers in a DIY enclosure (all using Mark Levinson equipment, except for the subs; I am unsure as to their amplifier), and that simply blew my socks off. It beat the clarity of some of the 'stats I've heard before but it had such a great depth to it.
