I'll say it again - their dumbeks are pretty bad. I get mine from an Iraqi immigrant who makes beautiful darbukas (another name for them), frame drums, Arabic tambourines and more. He taught Arabic music at a local conservatory for a while, and spends a lot of time designing, casting and building his darbukas (and his other drums, too).
He doesn't have his own site, but here's his section on the Wisconsin Folk Arts site:
http://arts.state.wi.us/static/Folkdir/alwan1.htmYou'll be very hard-pressed to find this kind of craftsmanship elsewhere in the US. The kinds of imported drums you've got don't even come close to Abdulhamid's - and (an incentive!) his prices are very reasonable. He's a super-nice guy and does what he does for love, not money.
As for Remo djembes, I see that I did misunderstand. Still, I just don't like them - I think that they really are another kind of instrument entirely, with a somewhat different playing technique. They're goblet drums, but I think that's where the similarity to good W. African drums begins and ends.
I do know of some musicians in Brazil who find Remo djembes to be ideal for the kind of music that they play (Bahian-style samba and related "afro" styles). These guys need relatively lightweight shells plus the resistance to humidity that comes with Remos, for outdoor performance especially. I've heard them on recordings and in that context they sound good, though I think the players have tweaked them quite a bit (with duct tape, etc.). to get the sound they want and kill the ringiness.
I guess my feeling about it all is that nothing can compare to a well-crafted drum made out of natural materials... goatskin, fishskin and cowhide matched to wood (or clay) bodies gives such a wide - and subtle - array of sounds. The problem with Remo starts (IMO) with the material they use for the shells. There's just no way that a compound of sawdust and adhesives will ever have the tonal qualities of a good piece of wood.
No offense meant, zack - if the Paulo Mattiolli series works for you, that's great. I think there are many situations where Remos can be effective. Trad. W. African drum and dance isn't (IMO) one of them.