thanks guys!
so i think i made up my mind. and it came down to me thinking what i really want in a headphone and personal taste.
i ruled out the akg k271 because i don't believe it will have enough bass for my tastes. i have the hd280s and like them but right now id rather have hyped bass than no bass. at least i can hear whats going on down there and then just remember to mix the bass a bit higher or check with my monitors.
ruled out the denon d2000's becuase i don't believe they are really a studio headphone, more of a fun or secondary reference phone. i do love the denons though. maybe in the future ill get a pair of d7000's, but i definitely will not be spending that much money on headphones as of now.
the shure 940's i still dont know enough about. im sure they're great though but idk maybe there not fun enough for me..
so as of now my choice is back to the Ultrasone Pro 750's. kind of funny...i always pick a piece of gear then go through weeks of researching picking so many different brands, then i usually end up right back at my first pick haha go figure.
but yeah im thinking they will be the best for me because i know they have good bass response (and not overly hyped), they are also very good for critical listening and are relatively flat (enough to do some late night monitoring/mixing), they are comfortable, i like the style which will also be good for djing, the velour pads are nice, sound stage is nice. etc etc. overall i think it will be a good headphone.
i will let you guys know if i end up changing my mind again, if not ill let you know once they have arrived to me. in the mean time feel free to try and convince me for or against the ultrasones or any other headphone.
sorry the the novel