What full range floor standers would be good

Rotel amp/preamp Listen to rock and blues 3500$ used
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Any Meadowlark , simple, high quality crossovers and high-quality cabinets, drivers and internal wiring.
ANY model should be good for fifty years.
If you have the room, Dunlavy SC-4(s) or SC-5(s) are as good a used bargain as there is in high-end audio.