Besides comfort and Feq response - any else important? I was at some local stores looking for inclosed Headphones and noticed that the wireless headphones had orse Freq response then the . . . .cirded ones. Sony had some for $140 that (if memory serves me correctly) were 5-30,000. The few cordless ones were 20-20,000. 5-30,000 seems freaking good, am I right? Are there others numbers to look at?