Dynaudio-Which one should I buy with around $5000.

With Dynaudio I’d suggest

Either stick to their small two ways (which they do better than most) like the Contour/Confidence old or new version.

OR I think you are better off with another line of speakers for a good three way as the good three ways with Dynaudio are in their top of the line range - and get very expensive (above budget). Three ways in their mid range tend to be bass heavy and lack PRAT 

I think the Contour 3.4LEs are a fine speaker and can be found almost new for your budget. 

+1 C1 Signature. I'm not sure why I don't own some. 

C20 has plenty of low end for me and I consider myself a basehead. Thought I would opt for C30 but have been very happy with C20. However I only sit 8’ or so from them. C20 plays louder with no issue from the woofer bottoming out. If you like loud bass heavy music then C1 may not be for you. Black C20 for sale here now at a nice price.

Stretch the budget and pick up the 60's.

After break-in - spectacular.  Worth the cash.  No need for a subwoofer, just spectacular.

Have seen them out there for 7k asking.