$3500 floor standing speakers used. What would be your choice ?

The best speaker I know of near your price range would be the used set of Silverline Bolero speakers for sale in CA. They are fantastic sounding speakers that play full range and beautifully check off the sonic boxes important to you. I think the seller is asking $4400, but perhaps you can get closer.

They may not be close to you and perhaps just out of your price range? I do know they are immensely musical with fully fleshed out mids and excellent bass foundation. Easy to drive and very nice looking! Nice big stage with very good imaging and easy to listen to for many hours   

Never heard Silverline speakers. Bolero could be appealing. Thank you for the suggestion.

Consider Wharfedale , they’re very clear sounding you may consider adding a subwoofer

I have some new Reva 4 that I am selling 

Also, consider the size of your room

Asking for advice on which speakers to buy or listen to is useless.  Even good speakers vary a lot in their plusses and minuses. First you need to know yourself, what factors you must have and which make a speaker impossible to live with. Then you have a chance to pick speakers. But you must listen yourself after you analyze yourself. The only thing you can hope from others is not what are great speakers but their analysis of the sound of speakers they like(and you have to hope their analysis is accurate).