I recently visited Katz's looking for their (formerly) delicious pastrami sandwich. After I ordered I heard two people talking about the change in ownership. My sandwich came out, I took a bite and it didn't seem nearly as good as what I'd had before.
I asked the waiter if it was the same pastrami and he said it was and asked how I liked it. When I told him not that much, he looked at me and then walked away without saying a word.
Doubt I'll be back.