Dolby Headphones for gaming, Sony MDR-DS6500, Pioneer SE-DIR800C and Sennheiser RS 170 ?

If you are like me, a gamer who want to keep it silent, you may think that Dolby Headphones such as  Sony MDR-DS6500, Pioneer SE-DIR800C, and Sennheiser RS 170 are a better choice than gaming headsets because with Dolby wireless headphones you can also use it for music listening and movie watching while with a gaming headset, you may use it for your movie and music,

Click here for the full detail of Sennheiser RS 170  with the special limited time discount price @ Amazon.com 

but I think its sound is not so good compare to Dolby surround headphones. So, if you are thinking to buy a mid price Dolby headphones, which one is the best choice for you ? If you use your game console as your home theater source as well, then I’d like to recommend  Sony MDR-DS6500 since it comes with optical out that match Sony MDR-DS6500, this Dolby surround supports 7.1 surround system so if you have a PS3 that can play a Blu-ray disc and offers a 7.1 sound system, you may love this headphones. While if you connect your XBOX and PS3 with your AVR, another option for a wireless  surround sound Dolby headphones is Pioneer SE-DIR800C since it comes with a variety of connections, its decoder may limited to 5.1 channels but I think it is enough for a headphones, and how about Sennheiser RS 170 ? In my opinion, this stereo virtual surround headphones is out of a table, it lacks of multi-channel connectivity and tends to convert your stereo channel to 5.1 channel, that’s for me, is unacceptable !