I had two kinds of cabbage going this year Chinese Hilton and Premium Late Flat Dutch. They had some minor feeding damage, but I can't recall finding any actual caterpillars on them. Even when the broccoli (green and purple sprouting varieties) and cauliflower (snowball and purple varieties) right next to them were completely infested. Interesting that we've both had them show preference for Cole crops other than cabbage. Wonder if that's a common trend or just an odd coincidence.