I own a pair of Santos Rosewood 10T's built in 1998. I believe the 10T's basic design has remained untouched since it's inception 10 or so years ago. The only tweaks that I am aware of is Michael Kelly's tweaking of the crossovers every few years.
As I recall, the last crossover tweak was around 1997. I believe Aerial just stopped producing the 10T's in the last few months. Correct me if I am wrong.
I bought mine a few years ago. I think they are an excellent sounding speaker, very good looking especially with the stands. Fit'n Finish is tops.
Aside from the Vandersteen Model 5's, you'd be real hard pressed to find such sonic, build, and finish qualities anywhere near the 10T's retail price.
To maximize your enjoyment, I would not recommend compromising on the amplification. A 300 to 600 wpc amp would be an excellent match. Hope this helps.
-IMO