Well, first, let me say there's lots of comparisons out there on the web so let me encourage you to do some research on what other owners say both here, and on Audiogon e.g.:
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1226995309&read&keyw&zzvon+schweikertor
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1195948455&read&keyw&zzvon+schweikertI have not heard all those you ask about but I did give careful audition to the Wilson Puppy's (and the B&W 800D and 802D, Eggleston Andra 2, a Sonus Faber model that escapes me, anything I could get to hear around here) before I bought the Vons. Frankly, all these speakers are very good and I think anyone could be happy with one or other and would have more to worry about determining partnering gear than doubting their speaker choice. For me, while I realize the Wilsons are among the best reviewed speakers out there, I could not really ever relax with them, they certainly impressed but I ended up fatigued rather than relaxed from listening -- does this make sense? Hard to explain but that was what I felt after several listening sessions.
Of course, on this forum you're going to find people who like the musicality of the Vons, and to me they are a fine balance, full range, detailed, but musical. Moreover, they reveal to me subtle differences in upstream gear. Since an investment of this size likely means a commitment to long-term ownership, you need to make a decision on more than 'bass' or 'dynamics' and find a pair that makes music for you - not much help but I did long sessions on a variety of amps and front ends before making a decision. To give you some idea of how that works, not only did I leave the Wilson sessions (and it was sessions) with reservations, I also ended up thinking the B&W 802D with MAC amps were more musical sounding than a more expensive 800D/Classe set up. Price does not perfectly correlate with sonic quality and you need to think about your system, your room and ultimately your taste. The language of reviews tends to suggest there is an objective scale of sonic quality on which we can measure audio gear and be certain that X must be better than Y......it ain't so simple, but listening can make it simpler.