Ckoffend's comment of "My feeling is that the Sohpias are the entry into the Wilson sound, taking one only part of the way." is complete nonsense. Wilson Audio does not make a Speaker System that is partially complete taking one only part of the way. The Sophias are "100% Wilson". Daryl Wilson (Daves Son-who is also involved in the business) has been using Sophias in his personal Home System since they were introduced back in 2001, and he, obviously, could use any Wilson Speaker System that he desires. The Sophia is only considered entry-level when it is compared to the price and size of Wilson's larger floor-standing Speakers, and not simply based on sonics. The larger Wilson Speaker Systems are made for larger rooms, with powerful amplification. A pair of Maxx2s would not sound as good as a pair of Sophias in a small>modestly sized listening room, with modestly powered amplification, and vice versa. The Wilson Audio Sophia is probably the most universally praised high-end Speaker System available today, as well as winning numerous awards and a perennial favorite of Hi-Fi Magazines, since its introduction. Ckoffends own comment of as I have never owned the Sophias should be enough of a disclaimer for readers to consider his opinion of the Wilson Audio Sophia null-and-void.
As to the original question: It is of my opinion, based on owning 3 pairs of Wilson Speakers (currently Sophia), and being close friends with my local long-time Wilson Audio Dealer, and hearing every Speaker System in their current line-up; that the Sophia will best any W/P-System up to the W/P-7. Most long-time Wilson Audio Dealers would concur, that when the Sophia was introduced, WP-6 sales tanked, Wilson new this would happen, and planned accordingly, by releasing the W/P-7 soon after.
As to the original question: It is of my opinion, based on owning 3 pairs of Wilson Speakers (currently Sophia), and being close friends with my local long-time Wilson Audio Dealer, and hearing every Speaker System in their current line-up; that the Sophia will best any W/P-System up to the W/P-7. Most long-time Wilson Audio Dealers would concur, that when the Sophia was introduced, WP-6 sales tanked, Wilson new this would happen, and planned accordingly, by releasing the W/P-7 soon after.