For the wii either will be fine, but for your PC both will slow down your connection ( download ) speed noticeably. I currently use security based on MAC addresses. If you don't have the address on my list you don't get in. I also have my SSID broadcast turned to off.
This will only mainly allow people who are really trying to break into my network to get in, I say if they are trying to get in in the first place, they will get in no matter what.
Thanks for the information. I know about SSID hiding and mac address limitations. But is this really good enough? I guess you're right though, if they REALLY want to get in, they will anyway. Still feels sort of unsafe though, my WAP will connect to a switch with at least 5 computers.
By how much is the connection slowed down, approximately?