WEP is faster than WPA but WPA is more secure. I personally use WEP here in the states. Some users have created WEP network for Pronto that "bridges" into a WPA-based router in that Pronto can get to the internet for use of web-based content such as weather.com but is not available for incoming connections. Others have locked down their WEP networks on the router by specifying the allowed MAC addresses which can connect.