Might be a controversial take, but I think this improves in areas where Tam Dao is lacking. To me, the latter comes across as too sharp, with sandlewood being undoubtedly front and center.
The sandlewood is still prominent in Radio Bombay, but it's slightly toned down in order to make room for this creamy coconut that is just lovely. On the dry down you get ISO E Super shining through to really carry the fragrance for a couple more hours and give it this nice cleanliness. In my mind, this scent evokes the image of a put together man.
Ultimately, after sampling the entire house, I ended up purchasing a full bottle of 'I Don't Know What'. But this fragrance regularly makes me second guess my decision. It's so so good.