Based on current interests and fascinations in order:
1. Amouage - now thanks to the generosity of a BNer (you know who you are you guilty one!) with samples and decants, my finances face a crippling future.
2. Serge Lutens - this is the one single house that I can survive on exclusively, for now at least.
3. Parfumerie Generale - if any house has managed to marry quirkiness and wearability, PG has done so with great success and results.
4. Montale - Ok, so maybe their scents might not be the most original concepts, but I can't deny that they smell great, last longer than the Zhou Dynasty, and project like laser. When I break it down, I've found Montales to be the most value for money. One spray really goes a long way, though I normally require more.
5. Tom Ford - This is the house that has got most of my attention lately. None of the scents are to die for, actually. But they present themselves in a well-made and satisfying manner. Apart from the less than justifiable retail prices, I've found myself to be really fond of this house and a good handful of its offerings.