thanks a lot for your input, lots of useful info
as for trying...I'd love to, however where I live (China) that is utterly impossible...at best you can find the model you're looking for online and order it from a shop/a website...but NOT A SINGLE shop will have them in stock for you to try (because very few people will buy these types of cans...ie they cost about a month salary for most chineses..and there are things more important in their lives!)
same goes for the German maestro...I doubt anyone has ever heard of the brand where I live..couldnt even find it on any website..outlook no so good! lol
I actually considered the AKG702 in the first place because I "know" (more or less, as I didnt use that many models from the brand) the AKG sound signature...the problem of the 702 is that they are open cans...my old 240 are semi open and that's sometimes turned out to be annoying...on top of that driving the 702 seems also a bit of a pain... so I decided to give up on them
I'm not comtemplating buying this new pair of cans from a listener perspective...quite the opposite...I need them to be clinical and uncompromised in their restitution....the opposite of the "fun" /slightly flattering side most members are looking for here. The closer to the restitution of a good monitoring system, the better indeed (rock /metal music chiefly). BTW I use Sonar X1/Studio one 2/Reason if that matters.
At some point I thought about getting 2 pairs (grado sr60i+ultrasone 650) or (ATH M50s+DT880 600ohms)...but again portability/size being a factor...one pair is better than two...
also, The 650 might be a bit more balanced (I'll take your word for it) but it has a higher impedance than the 750. I'm quite used to mix with headphones and I'm sure that after spending a few hours on the 750 (or another proper model), I'll be able to compensate for their slight faults...what really sold me on them is that apparently the spatialization/soundstage is very well recreated, they have a very tight bass that also goes pretty low and very precise and tamed highs after a proper burn-in (why do you say aggressive?). If that is the case (and it seems so in most comments/threads) then I need not look any further.
EDIT: finally went with the Ultrasone 750 + ART headamp 4...they might be a bit coloured but no worries, I'll learn them inside out and that wont be a problem, spatialisation seems to be very good and that an important factor. More when I get them.
Edited by deafandblind - 10/25/11 at 2:12am