What is the opinion of Reddit about the
HIFIMAN Deva Over-Ear Full-Size Open-Back Planar Magnetic Headphone with Bluetooth Dongle/Receiver, Balanced Input, Easily Switch to Wireless, USB/Wireless/Wired?

I would highly recommend the HIFIMAN Deva an great Open Back headphone with detachable cables and Apt X bluetooth adapter for $299 on Amazon including free Prime Shipping: https://www.amazon.com/HIFIMAN-Full-Size-Open-Back-Headphone-Bluetooth/dp/B0875PW5S8

https://www.amazon.com/HIFIMAN-Full-Size-Open-Back-Headphone-Bluetooth/dp/B0875PW5S8/ref=sr_1_5?crid=2AFBISW1KHQF7&dchild=1&keywords=hifiman+sundara&qid=1595304939&sprefix=hifiman%2Caps%2C1235&sr=8-5

Hifiman Deva.

Squarely in your budget, decently built, come with a Bluetooth module, can be driven by pretty much anything, are planar, etc.

For 300? You can’t get much better.

Deva is cheaper
https://www.amazon.com/HIFIMAN-Full-Size-Open-Back-Headphone-Bluetooth/dp/B0875PW5S8

Yeah check out the deva. They are supposed to be pretty good (though they might be a bit bulky for working out depending on what you do)

https://www.amazon.com/dp/B0875PW5S8/ref=cm_sw_r_cp_apa_glt_fabc_TCCG4APVEGEFNH0NYP3K

https://www.amazon.com/dp/B07X52DHH8/ref=cm_sw_r_cp_apa_glt_fabc_4S3NGDQ97C65RX3YJB7X

They look like a rip off of a more expensive pair

https://www.amazon.com/HIFIMAN-Full-Size-Open-Back-Headphone-Bluetooth/dp/B0875PW5S8