I've had a pair of Sennheiser HD555's for about 3 years now, (which I love), but I'm looking for something new. I don't want to spend more than $200, but I would like to find a set that are more comfortable than the 555's - especially when wearing them for an extended period of time. I also want to stay with the open-ear design. Any recommendations? PS: have amp, so no issues there.