I just started listening to the Sierras.
Very impressive. I have posted my impressions after comparing them to the 340s at Curtis's, but the difference is more pronounced in my room, and in a good way. Everything is better defined, the bass is better. Unfortunately I'm off to the Bay Area for five days tomorrow, so I won't have the weekend to listen.
In the next month or so I should have the chance to compare the speaker to many others. Should be interesting.
My family is watching American Idol right now, with the sound very low--they are impressed with the clarity.
AVS: Where everything you write will be used against you.