As far as wireless security goes, you have three or four options (well, really only one):
This is junk security. WEP encryption is very weak and can be "broken" quite easily since the PSK is transmitted in clear text. Someone with a
wireless packet sniffer can pull the PSK out of the air in just a few minutes.
Much better than WEP, however, it still has its weaknesses. It's harder to break, but can still be done with relative ease.
Another notch up the security ladder, but still not the best. It can be a challenge to break, but can be done with enough persistence.
This is the best available encryption for the average joe. Yes, there are better methods (802.1x and others...), but this the absolute best option
for your average consumer grade wireless gear. It is extremely difficult to break, especially if you use a strong PSK. If you use this option, its
safe to assume that no one is going to break it except for maybe alphabet soup agents, but even they will have some difficulty with it.
Incidentally, some of the best wireless gear available is from Ruckus Wireless. Their gear uses WPA2+AES and can also make use of 802.1x in the
proper enterprise environments, but there are a few other patented features that make it more secure than anything else. Ruckus APs don't use omni
antennas like everyone else... They use an array of dual-polarized directional antennas to Tx/Rx only in the direction of the wireless client, and the
AP makes a decision about which combination of antennas to use for EACH PACKET.
So if you were going to attempt breaking the encryption on a Ruckus AP by sniffing packets out of the air, you would have to locate your gear directly
between the AP and the target client.
Furthermore, Ruckus makes use of a unique and patented technology called Dynamic-PSK. This means that EACH DEVICE on the wireless network uses its
own randomly generated 64 character PSK. Since every device on the network has a different PSK, it makes it tremendously difficult to use the same
old sniffing techniques to break the key.
If you are in an enterprise environment and want the absolute best security (and performance) you can get from a public wireless vendor, Ruckus is
your best solution. Hands down.