book speaker against the wall

I am looking at buying bookspeakers for my office. Office size is about 15 by 18 feet, with windows all around. I would like to find speakers that can be placed against the wall, or are made to be placed against the wall, about 5 feet high.
My budget is around $600/700 used.
they will be powered by Yamaha M-60 totaly rebuild, and I will listen to cd/HD music only.
Thank you for your input.