If you want opinions (I like Atheros-based ones), ask here, if you OTOH want to base your purchase based on facts, check the
LQ HCL.
Anyone know of any makes and models that will work with my distro?
Luckily it's not some distro-specific issue. You just need the Madwifi drivers (with FC6 it's just two RPM's), Wpa_supplicant (one RPM, for WEP/WPA-based authentication) and two configuration files and that's it.