Best way to spend $1000 on used bookshelf speakers?


There is so much experience and wisdom in this forum, so I thought I would ask for some advice. Based on what you know now, if you had a budget of $1,000 (give or take) and were looking for the best bookshelf speakers you could afford, what would you be looking for?
ohmy
Dynaudio focus 140,160
Focal Aria 906, chorus 807w
Usher 718be: maybe for that priceĀ 



FWIW - I'm using a Rotel A12 to drive them. I listen to a huge variety of music, but I think I like the extra bass and punch required to make rock/pop/electronic shine.
@ohmy - before any model recommendations, I'd assess the following:
  1. room size and listening distance
  2. how close to the walls and corners the speakers will be
  3. which music genres you enjoy most
  4. which speakers you've heard that you liked
  5. which speakers you've heard that you disliked