The VPN is nice, and very secure, but you have to actually use it for a point-to-point VPN connection for it to be worth anything. It doesn't do a damned thing for a regular connection.
Bottom line: If you have use for a VPN connection then it might be worth buying. If you don't have use for a VPN, you already have the same firewall.
As far as breaking into WPA, the cure is to use a long, random passphrase.