I've been looking for a similar thing - I've worn and enjoyed Serge Lutens Clair de Musc and wanted to compare some others before deciding to buy anything.
I got a bunch of samples from TPC and Luckyscent and am just beginning to explore them, but here are some that I have found worth wearing further:
Il Profumo Musc Bleu
Nasomatto Silver Musk
Narciso Rodriguez Musc for Her Oil
Aroma M Geisha Blanche perfume oil