I got a Linksys WAP11 last year and really like it. I chose it over the one with the built in router because it has slightly better range and is more flexible. For example, it can be configured to act as a bridge between wireless networks. This is a feature many consumer WAPs don't have. I'll never use it, but it appeals to my geeky side.
WAP11s are probably best if you already have a working network and don't need another router. Of course, it's been over a year since I got it, so maybe there's better stuff out there.