I love the French form, and prefer it over the American pronunciation. Chloe for many sounds too cutesy, and reminds people of dogs, but Chloe (with an accent) sounds more sophisticated. I love the Chlo sound but I'm not wild about the e sound at the end, so I prefer Chlo-ay.
Chloé is pronounced klo-AY in French, (The _ay_ sound is shorter than it would be said in English.) Chloé, and the spelling Cloé, are currently very popular names in France. In 2009, Chloé ranked at #4 in the most popular names given to baby girls. [noted -ed]