There are quite a few problems with incipios though. I find the soundstage to be small. I preferred hd681 for classical over the aces. Soundstage is good enough for non competitive gaming. My ace's are definately not the most comfortable headphones in the world. Cup's are small to begin with and after removing the foam my ears touch the plastic grille in front of the driver. I don't use them for extented periods but for someone who does this could become a problem. Stuffing in the headband is also thin. Im fine with it but my girlfriend says it hurts her head. That is nothing to be worried about...looking at the pictures the structure of the headband seems to vary between different versions (ace, incipio, fa-004 etc..) My ace's also leak noice. Isolation is decent but people around you might be able to hear your music, even with fairly low volumes. It might be an issue with me wearing glasses, but the headphones just dont seal my ears in properly and the music leaks out. Not as bad as open headphones but as far as closed cans go...it's bad. For public use I think Koss prodj100 would suit you better. Fit's your budget. CAL! was also cheap while ago, but now it's 99$ on amazon. I haven't heard koss or cal! myself but reviews have been very good. Build of the ace headphones is very simple...which is great. Not many moving parts, less risk of breaking them. Ace's are are my on the go headphones for that reason. Even though headphones don't fold, they go in a small space. I won't go on describing how they sound, you have obviously done your homework 
All I can say, theyre as good as people say. Bottom line is: If you have a huge head, incipios might not be for you. If sound leakage is a problem, look somewhere else. If you can live with those issues I'd say choose incipios over cad's. I doubt there is significant difference in sq, so I'd say portability and price is a dealbreaker here. And again, I Highly recommend modding the incipios
