Pioneer SE-DIR800C is still no.1 for my choice

What is the best wireless true surround headphones ? I think Pioneer SE-DIR800C  is still the answer due to its connectivity, while many surround headphones let you connect them via optical that is not available for all DVD/Blu-ray players, Pioneer SE-DIR800C  offers 3 ways to connect and optical is only one of the choice,

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and also with the same price range, Pioneer always gives you more for win the competition, in this case, for the wireless Dolby headphones with the price under 300 USD, Pioneer SE-DIR800C  offers a Dolby Digital, DTS, and Dolby Surround decoder. The only downside of this headphones is that it runs with AA batteries that is quite heavier, I don’t know why Pioneer doesn’t use lithium battery with this price range headphones, if you think AA batteries are not acceptable, then another choice (and maybe the only choice for this task) could be Sony MDRDS6500 that comes with a built-in lithium battery.