Earphones / Headphones: Where to try, what to buy?

I’ve used Penon Audio, they have both Aliexpress shop and normal website where you can pay by paypal in GBP, based in Honk Kong very quick replies on emails any questions. Paid $10 extra on first pair for express delivery, second being more expensive express delivery was included, both sent by DHL 3 working days so very fast from Far east. Normal delivery says 7 to 14 days. First package slipped in no customs charge, second £17 VAT + handling, both marked down to $30 by seller. not sure if they participating in anniversary sales .