[andrewaylett]

Absent 802.11r, they might improve hand-off between APs.

The disadvantage of WPA Enterprise though, especially with a hosted RADIUS server, is that it's somewhat more difficult to gain access to the network to fix things if they're broken -- if your internet connection is down then you can't authenticate, and if you can't authenticate then you can't fix whatever broke to bring the connection back up. I suspect you can guess how I discovered that problem :).

So overall: no. There might be a small increase in reliability in regular use (although I've not been able to tell the difference), but the reliance on an extra service makes for less reliable connections overall.