I love Amouage. I only own one so far - Interlude Man (my god, what a stunner!), but even when I didn't enjoy one of theirs enough to want to buy a bottle, I was still always glad I sampled it. Their work really is impressive.
If you want to sample Amouage, Parfums Raffy is the way to go. They sell 2.5ml carded samples with sprayers at great prices. I got 2.5ml samples there for less than other places were selling 1ml samples that didn't even come with sprayers. Parfums Raffy rocks for Amouage.