I'm only going to comment on what I have, AKG K240's and Sony 7506's.
Both models are of a solid build and are very commonly found in both home and pro studios, meaning that they offer consistancy from place to place. Both sets of headphones are found in the $100-$120 range, sometimes about $20 less depending on sales. AKG K240's
1) PRO - Light weight, full ear surround for comfort, openbacked for less fatigue over time.
2) PRO - Has a very "light" and natural sound without overly hyped bass and treble.
3) CON - Open backed causes occasional bleed into vocal mics
4) CON - Impedance match ups cause them to be rather quiet. Aggressive drummers will blow them up trying to "hear better" while treating their kit like it owed 'em money, instead of just calming down a bit and playing like a human instead of a gorilla. (Can you tell I've dealt with this last bit?) Sony 7506's
1) PRO - Matched impedance with most sources means they can get loud
2) PRO - Closed back means less likely to bleed into your vocal mics
3) CON - Closed back means they can get hot/sweaty
4) CON - They feel a little bassy to me after the AKG's
* - This is not the fault of the headphones, but since they are louder headphones I find myself cranking things up a bit more ("rockin' out!") than I should which of course causes more ear fatigue over time. Again this is the users fault not the headphones.
Anyway I hope this helps in some way. Both are great and I would like to have several sets of each, truth be told.