Antaeus is one of my all time favorites. My nose isn't really good enough to pick out individual notes in it, and it doesn't really smell similar to anything else I know. To me, it has a similar "feel" to M7, although they don't really smell similar--dark, warm, a little sweet, but in a dry and uncloying way.
Antaeus works for me in any situation and weather, with a lighter application when it's hot, and I've gotten lots of compliments on it. It's also fairly uncommon and distinctive. One of the few fragrances I've liked enough to actually purchase at full boat retail price.