I was notified of some unusual charges by Chase about four weeks ago, they cancelled the card, did not hold me to the charges (online gaming sites in my case) and had a new card overnighted to me. Good on them for such a quick turn and the impact was minimal. I did not know at the time what caused the compromise, but today received the letter from MidWest.
I may be slammed here, but I have been a customer of theirs for a few years, between them and local shops, and try and buy mostly local, but have dropped about a grand with them since 2010. Most recently, a 10lb CO2 bottle they sent leaked from the pr valve; they not only sent out a replacement, but a shipping label to return the defective bottle with pick-up from UPS. I have not had the kind of bad customer service issues others have stated here, so can only speak to my own experience.
As someone stated earlier on this thread, if you have never had a card compromised, you are probably in the minority. This is my 4th or 5th since the first card was stolen in 1994, so once every four or five years to me is not that big of a deal. It is part of the risk we take for the convenience of shopping online and the reality of sophisticated hackers.
Though I am not happy with the long notification time - I do not check this forum every day for new posts and only looked for this incident today when I got my letter - my experience with Midwest as a whole has been positive.
EDIT: I just re-read the letter, not only the CC number, but email address, physical address, phone number, and CV code.
This whole package of identity theft now has me pissed off. It may not be enough to simply replace the card.