when i looked at buying v3 last year, i think i was quoted 2000 or 2100 for cherry, or maybe it was for the black - dad was looking at getting a set in black. i have not priced v4 yet (for possible use as dual centers & or surrounds) with my sig 8's. i'm close to puchasing the sig adp for less than 2000 from same dealer, & msrp is 2500, but want to try the sig 4 & the 100
v4 as surrounds before i make a decision. there are price differences between different finishes, cherry i think is cheapest, black is more expensive & birdseye maple is most expensive, at least in the signature line, although black & birdseye may be same price. the birdseye maple is a superior finish in the signature line, but i bought cherry as that matched my furniture.
as for differences b/w v2, v3 & v4, i have no experience with the v2. critical difference b/w v3 & v4 is v4 gets the tweeter from the signature line, which is a significant improvement. demoed v3 last year at home, & tweeter in my sig 8 was substantially better than tweeter in v3. when i return from vacation in couple weeks going to dealer to test out a set of v4 for use as a dual center channel, as well as sig 4. will update as to results once i get done. going to do it all at the dealer to avoid having to cart a bunch of speakers home.