Bad ones: Air Canada, Continental (looks like a spider web), New Sabena (looks like the old Sabena on steroids), new SAS (what a disaster), Aeroflot (all versions), new Austrian (too messy), Olympic (time for a serious change/update), RAM (too old fashioned), Air Zimbabwe, Air-India, JAL, Vanguard, new ATA.
Some new ones I hated at first but have grown on me are Delta, TWA, Southwest, Aer Lingus. I guess I hate change but grow to like the new liveries after a while. The new HL is an improvement.
I dumped at the gybe mark in strong winds when I looked up at a Porter Q400 on finals. Can't stop spotting.