I did a lot of research before purchasing these headphones. I can afford the Bose A20 but I had my doubts about Bose customer service. I've physically tried LightSPEED Zulu 3 and Sierra. (Note: the Zulu 3 feels more durable - more metal than plastic - than the Sierra). However, I found out from the owner of LightSPEED that they are having issues with Bluetooth. There is a latency that makes Bluetooth almost unusable. Each side has to delay the reply by about 3 seconds to be heard. I don't know if LightSPEED fixed this issue. LightSPEED is very convenient. I evaluated the noise reduction charts and the UFQ A28 ANR outperformed the Bose A20 (note I don't use ANR). I also looked at UFQ's service reviews and the condition of the A28. Both were excellent. Since purchasing the UFQ I've had the opportunity to compare it to the Bose A20. I couldn't tell any difference in ANR. While I find the A20 a bit more comfortable (slightly less compression pressure), I've spent many hours at a time using UFQ and I'm very satisfied. UFQ is definitely more durable than A20. The UFQ has a 3.5 jack socket for connecting a cell phone cable, which allows you to use a cell phone and communicate at the same time - I don't think anyone else has one. UFQ does not have Bluetooth. If I need it, I plan to buy Pilot Blulink. This still leaves my total purchase less than the Zulu or A20. Note. I like separate components so that one mistake doesn't bring down the entire system. Finally, the UFQ boom works very well. I find the A20 a bit short - I didn't get it right in front of my mouth. And I love the carrying case that comes with the UFQ.
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