I've had one a few years back from Patisserie La Cigogne and it was good. But maybe a bit overly rich. I've had the coffee chocolate one from Phipps which was again decent, maybe too rich.
I'd like to try a new one (and to be saved from my irrational desire to pick up the chocolate champagne log I saw at Sobeys----because no way can that one possibly be good... right?).