I take issue with "good enough" and substitute "displaying qualities of" since I find a typical niche perfume to be quirky (not always in a good way) and appealing to a narrow range, but not afraid to experiment.
So juice that does not pander to a wide audience, is a bit quirky, and somewhat experimental:
Thierry Mugler: Angel, Alien, A*Men, B*Men (gourmande and extreme - but an example where an experiment changed a whole market segment!)
Gucci: pour Homme (incense)
YSL: Kouros, M7
Classics, that are hard to wear:
Robert Piguet: Fracas (heck Malle and Lutens copy the basic idea!)
Guerlain: Jicky (Tons o' Civet)
Chanel No 5 (that slug of aldehyde makes it hard to wear for many but they still do!)
The interesting part, though, is when a maninstream house comes up with something somewhat experimental, and it works, it changes the market, and even niche houses spend some time following the popularity, though they are a bit more experimental!