Bookshelf speakers that sound good on a SHELF or SIDEBOARD

Vandersteen VLR designed for exactly that instalation , easy load, flat to something crazy like 47 hz and integrate very well with unique Vandersteen powered subwoofers, so you have some system growth options
read the reviews and go listen, made and designed in USA
and
KEF LS50
and
Sonus Faber
and.....

disclaimer
happy Vandersteen owner but i have other gear as well...