this may sound like a funny suggestion but can i recommened something vintage? maybe somethng to change the mood in this set up.
Look for some vintage A/D/S three way design speakers. They are all quite good and well within your budget. I think you'd be surprised. ADS speakers have not really gone nuts in the used market like other vintage speakers have and IMO are some of the best from that erra. The three way designs use an excelet soft dome tweeter and Midrande. its the soft domed midrande thats the star of the show. they aslo have very good bass, sealed designs very well damped cabs for the time.
I have a great main system but i dable in vintage audio for my office reason I love ADS so much. I have L710's and L910's and I still toss the big L910 into my main system for a listen as thay do so much right. very impressive for what they cost on the used market. considering old Klipsch LaScalas are going for silly money on the used market, most larger (Three way's) ADS speakers way out perform the Klipsch. Most are quite efficent as well and will pare nicely with your Levenson.