I have listened to these speakers and my experience with them falls in line with Marshal's review. They are awesome!
I didn't buy them only because the price for 3 of these plus shipping to outside of USA was too much $$$ for my tight budget. So I ended up with the Ascend Sierra-2s after experiencing the Sierra towers with RAAL tweeter a day or two after auditioning the StudioHDs. Given that the Sierra-2 is cut from the same cloth as the tower, I would say the sound signature is more similar than different. Neutral, clear, detailed and dynamic. For those with Sierra-1s or 2s... It's more akin to having a Sierra-2 that digs as deep as the Sierra-1 while keeping it's dynamic capabilities. I like my Sierra-2s very very much, but I will always admire and recommend the Legacies to those who are willing to spend on good speakers.