i can see why you dont like the senheiser hd 205’s i tried a pair and they really werent that great, but then again, they are at the low price range of senheiser headphones, you kind of get what you pay for. however, the senheiser hd25’s are probably one of the best pairs of DJ headphones money can buy, if you can afford them… plus all the parts are replacable, even though theyre indestructable, its still good to know if something does go wrong or breaks, i can buy replacement parts and not have to buy a whole new set of cans. Ive had mine for over 4 years, and the only thing ive had to replace are the ear pads becuase i was using them for hours nearly every day, but that happened to my technics RP DH-1200’s aswell. Another cheaper alternative to the HD25’s are the HD25 SP’s… which are very simmilar to the regular 25’s, just a more cut down version. theyre very light, portable, and sound GREAT, i have a pair of these as well as my regular 25’s and i use the SP’s when im listening to my ipod just because theyre lighter and a bit more portable. Dont be biased towards senheiser because they make some really great products, you just have to pay for them.
As for the aiaiai’s, from what ive heard, theyre great headphones also, but im not sure how much it would cost to get them to where you are, so not sure if theyre worth it. Plus i havent tried them personally so i cant comment directly on the sound, but i hear good things none the less.
The pioneer headphones, the 500’s,1000’s, and 2000’s are all great headphones as well… but a bit bass heavy IMO, and if you dont like the space age kind of look, then your out of luck, these things will make you look like your on a space voyager mission.
O yeah, and the technics RP DH-1200 (if i remember correctly) also a GREAT set of cans, but a bit bass heavy for production purposes… great for clubs and beatmatching though, and a nice clear, crisp sound,comes with a detachable cord, folds nicely, has a srew on adapter for different headphone sizes and they look pretty aswel 
Not quite sure what your price range is… but still, i reccomend investing in a good set of headphones regardless… your better off paying more at the start for a set of cans that will last you 10 years, then having to buy a cheaper pair every 2 years