Best speaker under $1K...... used market

I am looking for a 2nd pair of loudspeakers for my basement, and would like some opinions.

I currently have PSB Gold i's and listen to mostly country, bluegrass, and rock. I love the deep bass, but have not listened to many speakers in this range.

My system:
Forte 1a amp
Nad 1600 Pre
Pioneer PD-65 CDP
Kimber 8tc, Silver Streak, PBJ
Sound Dynamics 300 TIs, if you can get stands for them (18" high or so). Made in the 1990s and sound way above their price point. Good sound.
used Maggie 1.6,used Totem Arro,new Ohm Micro Walsh Tall's,new DCM TFE 200,new Wharfedale Evo2 20,new Wharfedale Diamond 9.6,new av123 Xstatic,new Infinity Classia C336,and new Swan D2.1E.
Keep your PSB Golds if you like the bass, otherwise I prefer think Magnepan 1.6 are a bargain in the price range but need to be 3' away from the back wall.

Spend the money instead on your front end, as your CDP is very very long in the tooth!