Try Les Senteurs MrsCocoa - they're a good UK source of niche samples. I'll dig you out a link, hang on...
Here: shop.lessenteurs.com/
As to what you might like - yes, L'air du Desert Marocain is an absolute must for anyone who enjoys ambers and orientals. It is my desert island perfume. I bought my first sample from Les Senteurs and absolutely fell hook line and sinker. There is nothing like it.
Some others you might want to try:
Ambre Sultan - Serge Lutens. A lovely amber with a slightly herbal top.
Ambre Russe - Parfums d'Empire. A deep, rich, leathery amber, with a boozy top. It dries down beautifully.
Hasu-no-Hana - Grossmith. Retro oriental with a lovely spicyness in the base.
Lyric - Amouage. Absolutely stunning oriental/floral perfume. Eye wateringly expensive for a full bottle but you can get a sample for a fiver.
Ambre Precieux - Maitre Parfumeur et Gantier. One of the best quality ambers out there. No frills. Just straight up amber with a slightly smoky edge.
HTH