I LOVE them.
I used to get them sent to me by an Italian nun - I've forgotten the brand, something Italian, obviously, with a pink wrapper.
I've never found any as good as those. I know they exist - they must.
I've tried many brands, cheap and expensive. Rococo were the worst - no alcohol! M+S are ok.
I'm eating Thornton's right now and they're atrocious. The chocolate is appalling, the liqueur is gloop.
Grr.
If you know any good ones, please tell me.