Favorite WAP Unit?

My only hands-on (no pun intended) experience with WAP and WAP units has
been with the Linksys WAP. For some reason it would not fully cover a 800
sqare foot condo. Is this just a problem with the Linksys models? Does
anyone have any recommendations? Im looking at trying another brand WAP in
my house and at a good size office suite.

Thanks,

John Albee