CAO is no longer in the pipe business, but yes, their meerschaums are excellent. Carving can be a bit wonky at times, i've seen some fugly CAOs, but the meerschaum quality is good.
Ismet Bekler is a now-gone carver who was imported first by Royal (his pipes carved for them came with a tag stating they were by Bekler), then from 1974-1978 for Golden Horn (this is when he began signing his pipes), and from 1978 on for CAO (something like, I'd guess, 99.99999999999% of CAO Beklers are signed). CAO bought the top 10% of meerschaum quality-wise, re-graded it and gave the top 10% of that to Bekler. For Royal and Goden Horn, and in his early days at CAO, Bekler was a master at abstract pipes; nobody else ever carved these like he did, and his for Golden Horn were appropriately termed "Beyond Imagination." His later CAO work was in smooths, surface-relief designs, and occasional lions, sultans, fish, etc.
If one wants a Bekler, and is okay with his later work, go to Rich's Cigars in downtown Portland, Oregon. They bought out much of CAO's old stock, and have several hundred available. They bought half the stick, and Iwan Ries of Chicago bought the other half, but I don't know how many Iwan Ries still has. These do not have the brass CAO stem dot, and are in rectangular velour-covered chests with a facsimilie of his signature on top. They're usually in the $200-350 range, and will be absolutely worth the price. If, at Rich's, you don't see a type you like, ask them, and they may have something in their backstock (they have MANY more Beklers in the storeroom than are on display).
I know there was a big kerfuffle over Storient, but I don't know enough to suggest endorsement or not (I'm not sure they're even going under the Storient name?)
IMP, Meerschaum Market, Altinay, Altinok, Baki, Meerschaum Market, Paykoc, yes!
Yanik has himself some dedicated haters, who've posted some truly nasty stuff on forums and message boards. Claims of eBay account-hopping, selling pipes that shatter when smoked or have obviously been carved by apprentices, wind-caps roughly glued on, stems cut poorly, terrible draw, open rudeness at questions asked, and all manner of other horrors. I can only speak to personal experience, but I bought that dragon pipe, which was quite expensive, and communicated with him extensively. He was very businesslike, bordering on curt (he may already be annoyed over the flak he's caught) but he answered all my questions, sent me photos of examples for choosing case, lining and stem colors, and reassured me with buying via bank transfer (PayPal has completely left Turkey). Yanik's eBay sales with PayPal are handled through an external person, and have no fear about buying from his catalog or from his eBay account.
SMS also sells good pipes. Their carver Erdogan Ege, like most mastercarvers, has a specialty-- his is jovial, bearded men, and in my opinion, you won't find a better Viking or Bacchus! Bacchus is a subject I think frequently ends up looking terrifying, and the one I have is the best Turkish Bacchus I have ever seen. Stone is high-quality, draw is good.