madavid0 --
I’d be looking for used and active ATC speakers, like the SCM50, 100 or, if within economical reach and space permits, the SCM150(ASL). Or, how about Volti Audio’s Rival (recently very favorably reviewed in Stereophile), or a used pair of its sibling, the all-horn Volti Audio Vittora’s (may be too expensive)? From the same company is also the Alura model, which should also be had within your budgetary requirements as a used pair.
In continuation of poster @analogluvr’s views and his fine recommendations, I’d stress: If you want to experience the full(er) envelope and macro-dynamic wallop be sure not to buy speakers too small or too inefficient; there’s really no replacement for displacement, as a saying goes, and all the named (and very efficient) Volti models should fit the bill here with their 15" bass units and powerful BMS mids compression driver, as should the larger ATC models already mentioned. Excellent micro-dynamics are especially to be found, I believe, with horn-loaded speakers, but even though the ATC’s are not horn-loaded I’m sure they’ll perform admirably in this regard as well (the 3" midrange "super" dome used here is a true powerhouse).
