I wasn't impressed with the LCD-3 when I listened to it, so I definitely don't think it's worth the money, but that's just my opinion. 

Just snagged a X1, waiting for it to arrive. Curious to see if I think it will sound different than the X2. Philips have some real good stuff going with the Fidelio X line imo and I couldn't resist the urge to try out both hehe. Don't have the X2 anymore to compare with though.

Sorry :( will look. Well, don't let my impressions spoil your expectations, we all hear differently and have different gear. I had the he400 on loan at one point. From what remember I thought it sounded good, but a little boxed in sound, nice bass. I didnt think the sound was quite good...

No, it's a relatively faint hiss, but unacceptable imo.

Grats, hehe it's a slippery slope, watch out. :) the 650 was the first headphone i got back when it was still new on the market, still enjoying a lot it today. It doesnt distract me, it just let me focus on the music. Comfort and tonality is top notch, and it has nice crisp attack.

I decided to return my X2's and get a refund because the bass was slightly stronger in the left cub.   They are also a little too bright for my taste, and the bass is too lean, not fat enough. I would have liked a little louder mid range too. Bass quality is great, definitely the X2's best...

  It's my impression too that tubes works well with the X2's. I tried using the Lyr, and background noise aside, that amp really made the X2's sing. Maybe 6 watts was a little overkill though hehe. 

I agree, they sound quite awesome and cool design. It seems to me there's a lot of reverb going on in the sound, but that's what I like about them. and the bass is very nice. I don't have them, but I listened to a lot of headphones in a store today, mostly portables, and they were among them...

most comfortable for me are senn 650 and CAL!.

My X2's have arrived from Amazon.it. The left phone has more bass/volume than the right one, treble seems even. I tested with mono dsp in foobar. Not sure, maybe I can live with it.    edit: I do like them otherwise. they look good and the sound is impressing. 

I'm getting ready to pull the trigger on these babies. :D Have anyone seen them cheaper anywhere than 292$ (234€)? That's what they go for on Amazon.it.

I want these headphones! They might be exactly what I'm looking for. Pricey though. Gotta sell off some stuff first.. 

I've bend the headband outward a lot, the clamp was insane before. 

Keep in mind the ST is slightly better than the STX, and it's a good match with the 650. It won't put special magic sauce into the 650 like an amp with tubes will though. But that can be added later of course.

Thanks for the link holycheese and derxen, but it seems Italy is the place to buy them from atm. I really don't need another headphone, but Tyll's review of these has infected me with a bad case of upgradetytis. :( However I probably need to sell off some gear to justify getting them..