Polar1
100+ Head-Fier
i dont see it noted what you want the headphones for?
if its for home use id say take the HD650 over the 598 but if its for mobile, outside in the real world use id say skip them both. for out doors take the pro500.
I want the headphones for home use only. I'll just have to connect them straight to the portable device because I don't have the convenience of getting a tabletop amp for the time being.