Speakers for ML 33H

Hi all,
I recently upgraded my preamp and power amp to:
AudioAero La Fontaine SACD
ARC ref. 3 Preamplifier
ML 33H monoblocks

My speakers are Focal 937 BE (25th anniversary).

The defect of the system now is a lean presentation on the bass (no bass slam) and a sybilant and too sharp mid-high frequencies: A terrible result.
(Before the upgrade I had a pair of 25W SET 845 tube amplifier, and despite there was no bass at all, the midrange and the musicality was fantastic!)

I am analyzing the following second-hand speakers that match my budget:
- AVALON EIDOLON VISION
- WILSON P/W 7

What I am looking for is a good bass response with some bass slam (I don't like Krell emphasis, but like bass...) and for a liquid, silky midrange.

Any suggestion?