Aerial 10T and Aerial 9

For any Aerial fans out there I have a question. Firstly, let me say I am a big fan of Aerials, every time I have heard them they have really impressed me.

So, is a 6 year old model 9 definitively better than a 10T? I know where some second hand models are available and I plan to listen to each. The 9's are approximately 2.5x the price of the 10Ts. I plan to let my own ears be my guide but I am curious what the audiogon community has to say.

What price is fair for each speaker assuming good condition?

thanks in advance for responses!