I'd prefer to live in a world without attack ads but... these ones really made me laugh is all I'm really saying. I'll concede the "sophisticated" point though.
Gotta say I'm getting a kick out of the latest round of attack ads from the CPC. They are certainly more sophisticated than the ugly jabs they took at Dion last summer. Also love the url they chose to promote the campaign: http://www.ignatieff.me/