For home users, you really won't notice the difference - I've got various Dlink, Linksys, 3Com, Accton, and Intel cards floating around and in day to day use there's no difference.
<but> I would never put anything other than an Intel Pro 100 in a server (unless it's gigabit, in which case I would use an Intel Pro 1000 🙂 (which is hard to say for an AMD-loving type, believe me))