Watt Puppy 6

Can you guys tell me if buying a used pair of Watt Puppy 6's at 1/4 the cost of the new version Watt/Puppy is a good thing thing to do?

I have heard the new Watt/Puppy 8 and liked them.

I currently own a Legacy Focus Speaker and was thinking that the Watt/Puppy 6 would be an upgrade over my Legacy Focus ... would it ?

Please let the opinions fly but remain calm.