only brute force dictionary attacks can crack WPA/WPA2, aircrack only does dictionary attacks on WPA/WPA2.
even the most recent attack on WPA semi broke TKIP encryption which would only let you see routing information and not any usable data and TKIP has been replaced with AES.
see SN #170
http://www.grc.com/securitynow.htm
also see
http://www.aircrack-ng.org/doku.php?id=cracking_wpa
just use a decent password with WPA and forget about MAC filtering.