I've had the Edimax 7718Un wireless dongle for 8 days and the rt2870 driver update came through yum. It is great. Here is my iwconfig
ra0 RT2870 Wireless ESSID:"Lynch" Nickname:"RT2870STA"
Mode:Managed Frequency=2.427 GHz Access Point: 00:18:4D:25:01

E
Bit Rate=270 Mb/s
RTS thr:off Fragment thr:off
Link Quality=100/100 Signal level:-25 dBm Noise level:-71 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Screamin