I tried this years ago and did not like it. I just revisited Tam Dao, and I guess I have done a near 180. I still can't say I love the scent, but I at least like it now. I get some sweet sandalwood at the start that is quite nice, and then the scent turns briefly green. The green transition is brief, but a bit medicinal and unpleasant smelling. Finally the sandalwood returns, mixed with a strong incense accord. Neither the best sandalwood nor incense scent available, but worth a sniff if your tastes run to either of those notes. A mild recommendation from me at 3 out of 5 stars.
I share your change of heart about Tam Dao. Reading your review -and Sherapop's- inspired me to get around to writing my own review. Unfortunately, I went off on something of a philosophical ramble but Tam Dao is an interesting fragrance