Agere Orinoco is very good. Anything that "rebadges" Orinoco is of course also good.
Most of the rest is crap. Don't get me wrong, Linksys and D-Link, etc. are budget values, but you really get your money's worth with Orinoco. In fact, I've seen a lot of poor reviews for Linksys WiFi products. I own both an Orinoco PC card and a D-Link PC card, and the D-Link card is presently gathering dust.
Quality aside, Cisco is too expensive for SOHO use. Reviews I've seen show Orinoco clients to be very competitive with Cisco Aeronet anyhow.