so $4999 is okay? i do joke but you really need to be more specific.
approximate budget?
do you have an amplifier? is an amplifier okay?
usage?
sound signature?
open or closed?
portable?
do you have big ears, a bit head?
what microphone and are you worried about i picking up audio from your headphones?
if you have no budget, then cans like the he400i, hd600/hd650, dt880-600/dt990-600, t90, k712/k702/k701/q701/k7xx are all good 200-600 headphones worth looking at. if you have a higher budget, stax has some nice ones or the higher end at/beyer/sennheiser/akg offerings are good too.
if you want a better answer you need to give us some info.