Citi Prestige
Just received a retention offer of $200 statement credit after spending $4K in each of the next three months. Pretty high spend requirement but I can shift around some spending that normally goes on my CSR for a few months. I asked for other options and was told it was this or nothing. Took the offer since it makes the card essentially free after the $250 annual travel credit gets factored into the equation.
One humorous sidelight - when retention specialist asked why I wanted to cancel card, all I said was "because of the large number of benefit devaluations over the past few years, which I'm sure you've probably heard a dozen times already today, but if you want me to I'll go through them one by one." At that point rep lets out a long sigh and says "you're right, that won't be necessary".