I am torn.
I think I am going to go with the AKG Q701's but I've had success with Sennheisers so the HD598's are an option.
I know it might not be your style but listening to this song with my HD485 sound fantastic so I want something that will emulate a similar experience.
Any recommendations on a sub $300 open air style headphone.
Have you checked the buying guides linked in the opening post of this thread?
You seem to have more than doubled your stated budget.