no such thing as a mac specific router. yes there are apple airport base stations but they work w/ any 11b/g equipment.
i've used my iBook w/ d-link 11b, 11g, and 11g-turbo equipment. mind u the mac can't take advantage of the turbo, but it connects just fine.
right now i'm using the di-524. we had 3 routers in the house, the others being belkin and a linksys 11g routers. the belkin and linksys were screwy when we tested them out. my d-link however has worked fine w/ allof our equipment.
i'm at the in-laws' place for the academic break, and just installed an 11b airport (not extreme), into their older powerbook and it connects fine w/ their linksys equipment, as does my iBook.