Xiaomi Gold Piston 2.0 (example: what is the best combination with Xiaomi Piston 2.0)

Xiaomi Gold Piston's best combination? My ears of course.

Just googled about this baby after this thread and can't wait to try it out if given the chance.
Can replace my cheapo monoprice IEM that is been serving me well. ^^

Good seller. Paid on Thurs Morning. Thurs Afternoon sent and Friday Morning arrived.

It's original.
Smells like chocolate.
Sound quality is pretty impressive for the price paid.

Another thing to note it's the Gold Piston 2.1. No difference to the sound quality between 2.0 and 2.1.

Only thing added is L and R markings on the IEM.
S, M, L on the tips.
And also another metal clip provided.