I have several fragrances I love that don't have a big transition - not that they are linear, but the drydown doesn't bring a big change in the scent of the fragrance. However there are some that just change radically and end in the basenotes with that: aahhhhhhhhhhhhhhhhhh... feeling!
For me some of the best are:
1. D&G pour homme - I don't particularly like the topnotes... too many people spray too much and it overwhelms. However, on my skin (and sprayed in appropriate quantities!), the drydown is sublime!
2. Bvlgari Aqva - a great change from a salty aquatic to something much more deep... but it could be deep aqua if you wish!
3. Montale's Black Aoud (Lime too!) - it takes a while on my skin, but a few hours after first spray, it becomes so deep and rich.
4. Carthusia Uomo. - Just a beautiful basenote... I could sniff my arm all evening!
These are just a few that come to mind... what are your favorites?
(edit - sorry originally wrote Black Orchid and meant to say Black Aoud! Thanks TwoRoads!)