anybody know about these? ill do a search tomorrow on them if i can, but i'd like some opinions from anyone whos used them. i borrowed one from the studio last night, for an URB wedding gig this weekend, and it turns out the guy is selling it for $150. anybody know about prices for these used? i may be able to sell my V-4B cab for $200 or so this week, and pick this up, but the problem is, hes got 2 other guys looking at this pre already, but theyre not from around here. im just not sure how high to go with this.