In your range, if you can find them, some of the ADS XX90 towers would be pretty sick. I have L1290s that I got near the low end of your range and spent another couple hundred bucks having them restored (nothing was wrong necessarily, just making sure the usual wear-and-tear is dealt with, treating the woofer surrounds which are rubber rather than foam, and recapping the X-over).
L990, L1090, L1290, all can be potentially found in your price range, and are all great speakers. Some folks say the 1090 is the best-sounding of the bunch; I love my 1290s to death, though.
Depending on where you are, they might pop up on local sales, but they're a lot more common in New England and get less common the further west you go.
I don't know if yours are the same, but on my big ads towers there's a biamp switch that could have been flipped. Not sure if the 1090 are the same.Hello. Just saw this... it to hijack but would appreciate any advice/guidance on my ads 1090s. A contractor recently moved my 1090s. When I placed them back, I’m getting very little bass out of one of them. All connections are in proper place so externally all looks good
any idea how I can trouble shoot this....I’m not very handy but if I had to guess maybe something inside was moved out of place. However, I don’t even see how to remove the drivers to take a look
thanks in advance for any suggestions...
I don't recommend the Kef with a Pioneer.

What I meant to say was with the Pioneer that the OP has.
Good choice but not readily available around these parts.Not the D series anyway.The D series(D-7, D-9) CV's are readily available and nice ones can be had within your budget. You may find some at the lower end of your budget that will need refoaming & recapping($50 - $75) while the upper end of your budget should have new foams and capacitors.
These would be "future proof" a you mentioned.
Or a pair on ESS Monitors-AMT3'sEss made/makes some fine sounding speakers. The Heil tweeter is fantastic. I also vote for ADS. Way better than HPM 100's IMO.