I really feel like ModWright is often overlooked. Their current model pre is out of your price range, even used, but there's one of their older for sale on the other site. I've been. Extremely happy with my LS100 preamp from them. Truly boutique product, excellent build quality, and more than any of that, sounds amazing.
https://www.usaudiomart.com/details/649960251-modwright-kwi-200-with-warranty-until-may-15th-2023/