It’s hard to have “a favorite” as there are certainly many fantastic options. Different models perform different functions, and have different placement requirements and space requirements. They can also fall into drastically different price brackets. There is no ideal speaker for all users, but fortunately there are many many great ones to chose from.
I will continue to add to this list but at the moment, here’s a few strong recommendations:
Bookshelf under $150 – C-Notes
Bookshelf $200 – GR-Research Desktop Mini
Bookshelf between $200 and $500 – X-LS Encore
Tower under $1,000- X-Statik, Elsinore Mk 6
GR-Research braided speaker cables