I have been looking around for some surround sound headphones and this model seems a good price. Sony MDR-DS3000 I have also been looking at various other sony models and the pioneer ones (well reviewed on here) i also notice Phillips have some out as well (dolby headphones model) Has anyone got or had the sony surround headphones? (any model) Are they good? do they hiss? whats the infrared transmission like? Do they have convincing surround sound (i.e. you can hear things in front and behind) Has anyone compared them to dolby headphone? Are they better or worse? Thanks and sorry for all the questions.