Value in

Some previously highly regarded speakers can now be found on the used market at very reasonable prices. Examples are Aerial 10T's ($2600 or lower), Thiel CS5i's ($2900) and Vandersteen 5's ($4000) to name a few. Assuming they are in good shape (Some adds even state a recent factory refurbishing such as new foam and drivers etc.), they seem to offer an excellent value. I would like to hear from those of you with opinions on the wisdom of purchasing older models (and, of course, technology). All things considered, would I be better off spending $3 or 4k on something newer?

I understand the importance of system matching and electronics (especially with Thiels). For those of you who would like more info: (1) My room is 18' x 21' and half open at the rear; (2) I listen to ALL kinds of music; and (3) I'm currently using a Bryston 4BST, Bryston BP 25, and a highly modded Anthem CD-1 with Soliloquy 6.3's.

As always your counsel is appreciated!