I use the Nanocomm. Excellent commfort, quality and price.
NanoComm GA - Ultra-Lightweight, Custom-Made Aviation Headset From Puretone
You shouldn't be worried about TSO approval. I found a document online which explained that a headset is a positive benefit to safety and would not be required to be TSO certified.
The reason I found it is because the aircraft I fly specifies the types of headsets which are approved. I didn't want to buy one I couldn't justify and the article satisfied this doubt.
Your headset should exceed the TSO which is a minimum standard.
https://www.faa.gov/about/office_org...rpretation.pdf
Further googling will produce more documents.