First impressions are: these are the most comfortable headphones I've worn yet. The pads are nice, spacious and squishy and the headband work to relieve concentrated points of pressure. In comparison to my LCD-2's, the Paradox win by miles.
I much prefer the cabling system of these. It's much easier to plug in and unplug the cable and it's more out of the way than the LCD-2 cables are. Being a 3.5mm termination on the headphone side also means I can bring out the uber long 3.5mm to 3.5mm cables I have, allowing me to use these headphones at extensive distances if I need to. I don't think I'll need it often but its refreshing to have more options.
Soundwise, they sound similar to LCD-2's, with the only perceptible differences being tighter bass, peakier treble and less distortion present in the LCD-2's.
To give an example of the peaky treble, listening to a 24bit 96khz rip of Bueno Vista's Social Club, one track has maracas in it which the LCD-2's exhibit much louder than the rest of the treble range. Through the Paradox, the maracas sound closer in volume to the rest of the treble range. I much prefer the flatter sound signature of the Paradox as it's less fatiguing but still detailed. The LCD-2's do have a shelved treble section but their peakiness makes them seem at first more detailed but it soon gives way to just hearing fatigue.
Bueno Vista's bass lines make it apparent that LCD-2's still have the best bass my ears have ever heard to date. It's tight, natural and low on distortion. With the Paradox, I get the feeling that I've perceiving more distortion in the low end however I have to emphasize that this is a barely perceptible difference. What is perceptible, though, is the amount of wooliness I'm hearing. This is something I'm familiar with coming from another T50RP mod, the Thunderpants.
That said, the excellently balanced sound signature and the much improved comfort factor win me over. Yes, I would prefer to use the Paradox over the LCD-2's. They made me dance in my living room when I first listened to them through my DX100. I'm currently looking at buying another pair new so i can enjoy them as much as my other half is right now.