I was very interested in the Emotivas linked above (Airmotivs) so I decided to buy them to see how they sound. The day after I ordered my Airmotiv6s ($799/pr
) I came across a link on another forum that showed these speakers are not actually made by Emotiva. They're just rebranded speakers from some Chinese manufacturer called QMS (http://www.qmsaudio.com/
This wasn't necessarily a bad thing since almost all speakers in this price range are made in China these days, but it is something worth nothing.
Anyways, mine arrived a few days later and I listened to them for about 3 weeks before sending them back for a refund. They do sound nice, the tweeter is not as good as other ribbons I've heard but it was definitely smooth. It never became harsh, even at high volumes with the worst quality MP3s I could find, but it was also lacking in detail. The 6s had a lot more bass than I was expecting, when I had the Airmotivs I also had a pair of 8" M-Audio monitors I was trying (BX8 D2) and the Airmotivs could get almost as low as the much larger M-Audios, though the Airmotivs had a very clear midbass hump that helped them. This was not fast, accurate bass but it wasn't too bad, either.
I'd say the 6s would have been great if they were priced as Audioengine competitors, but I would never pay $800 or even $600 for them.
Speaking of Audioengine, I haven't heard the new A5+ but I've had a pair of A5s for 2 years now and still feel they're the best value under around $500 that I have personally heard. I try to listen to as many speakers as I can, but I certainly haven't heard everything on the market.