WPA2 with good password, at least, would put up a non-negligable barrier in terms of the number crunching required; in contrast, getting around MAC filtering would take effectively no time at all.

WPA2 is as strong as the password used on it, so it can easily be strong enough to deter any attacker from that perspective.

The only in-the-wild attacks against WPA2 are variations of brute-force attacks.

There are precomputed rainbow tables of common SSID+passphrase combinations floating around, but as a general rule, WPA2 with a sufficiently complex passphrase should be secure against anyone who doesn't have a massive compute cluster at their disposal.