Best speaker on used market around 10,000.00

Vandersteen

I owned the Andra 1 and did not keep them long. Is there a big difference in the 2?

sounds like you need krell "slam and dunk" endless drive and attack,dynaudio c4 which also have punchy sound ,and bryston source bda-1.Sound which doesn't rip your head at loud volumes and you loose sence of volume you are listening to music

Avantgarde Unos or (if you're lucky) Duos.

In my humble opinion, there's no way anyone can answer that question.

Since the speakers are last in the chain from source to your ears, every component in this chain affect the outcome of the perceived sound from the speakers.

I heard Wilson's WAMM setup in a audio store that sounded terrible, and I heard Martin Logan's electrostatics setup in a home that sounded amazing (mine ;-).

Unfortunately gone are the days of the boutique audio store where I could take home a set of speakers for a week to audition them before deciding to buy them or not (good 'ole days, sighh).

Speakers are in the same class (but more so) as most of the equipment in the audio chain: totally subjective opinions as to who likes/dislikes a particular link in the chain.