I was lucky enough to be stateside last week, and auditioned the LCD-2s outside. The other set I was considering was the Grado GS1000i, which they did not have in stock, so comparison was with a PS500.
So I'll say first off, that the PS500 were a good fun listen, but when I changed over to the LCD-2s there was no comparison. The LCD-2s offer a very speaker-like experience, and in comparison the Grados felt very much "in your head" and trebly. The LCD-2s are definitely not a bass monster, but it is very controlled and authoritative. A very relaxed listen that wasn't at all fatiguing. I was totally sold at that point.
As an object of desire, the Audeze set are lovely - well made, rich rosewood patina, and quite weighty, but not uncomfortable. Just a good heft that makes them feel like objects of substance and durability.
So at this point I decided to try out the LCD-3s. My hope was that the difference would not be discernible to me, just being more expensive materials intended to create a higher margin item (ultrasone...).
They do have a distinctly different signature. The most obvious indication is the handling of high frequencies, which ultimately infuses sound across the spectrum. So at the top end, sibillants lose that harsh lispy rasp I'd thought was a fact of hi-fi life, and resolve correctly. Suddenly listening to voices like Dylan becomes much more comfortable. Rolling with a bit of Stravinsky, bass drum notes in Rite of Spring lose any of that slapping thud, and round out properly. I was deeply impressed.
I'll point out that all of this was driven by a meridian dac off a pc source - not what I'd call rolls royce set up, but there was no indication that the signal was breaking up or struggling, although if you want to drive very loud it won't do.
Moving onto a higher powered source - in this case a McIntosh D100 digital preamp - and it's really lovely. You know when you get the tingle back from a piece of music you've heard a 100 times. I was listening to LA woman by the Doors, and it struck me in ways I can't describe. Makes your eyes water. I ended up buying the shop's demo pair, and back at home now, couldn't be happier, with it being driven from Sonos->Violectric V800 DAC->Violectric V200
Yes - it's a lot of $, but in answer to earlier comments about headphone listening, I rationalise it like this:
1) I love music. It's my vice, if you like. People spend their money on all sorts of things - this is where it goes for me. Shutting my eyes and letting the music carry me away - a private pleasure. There are worse, and more costly vices!
2) To replicate the quality of listening with a "through the air" set-up would be an order of magnitude more costly. I won't get there any time soon! While Closed can listening I feel iis for private listening in public situations. Open cans give you a speaker-like sound, but at a fraction of the price of a speaker set-up. You need quiet space to do this in - it's not a private way to listen.