There are tons of recommendations already on this board for headphones and earbuds. Using the search will give you access to them… BUT… take any review or recommendation with a very large grain of salt. Headphones or earbuds are the most personal part of the audio chain, and everybody has their own “vision” of what makes a great set. What I may love, you may loathe. No one set of headphones is going to be perfect for every application.
I use a set of GS 1000 Grado’s when I want to extract every single bit of sonic information from the fuze; I use Sennheizer 201’s or 202’s for general use (meaning: good, but not fantastic sound) and a pair of JVC marshmallow earbuds for talk radio applications.
These are my preferences; yours may be completely different.
I’m sure recommendations will abound, but the only one that really knows your ears and preferences is Y-O-U.