Just got the sony's mark 5

I recently bought this for around 300$ and I'm loving it I'm in love with the ANC of these Was using the XM3s for over 5 years and now I thought it's a good time to upgrade I miss the fold but still i think folding make them weaker and they rattle a lot

Any good balanced but a little bit bassy EQ recommendation? Also do I need to buy any accessories for these like sweatpads etcetc and if so then which ones Also the white thing ( aux to c converter ) is not included with XM5 (got it with my phone and I use it very often)