In general, Embargo is weak. I know I ranked it low. Even if my opponent successfully embargos a card I want, getting one curse is not that bad. Though, it is funny to watch the psychological effect with players, even good ones who won't buy the card they need just because it's embargoed.
Duchess is weak, but I believe I had Pearl Diver last. I mean, come on, unless you have tokens, or are buying it for Goons points, Pearl Diver is almost useless. My rank for last was Pearl Diver then Duchess then Secret Chamber.
I ranked Quest 26. Nowadays in Dominion with the engine-friendly environment that we mainly live in, Gold isn't that great of a card. I mean, it is okay, but not great. In slogs, the card is decent. I ranked Scouting Party just slightly higher at 23. Cycling is good, and it sure is better than being able to sometimes gain golds.