I also use the Wood color from Testor's line, for shading when I use the gloss flesh color. But recently I started experimenting with flat acrylics, and I got several shades of flesh from Andrea--light, dark, pink, as well as a basic flesh color. I'm messing around with techniques like the connoisseur painters use, shading and highlighting, and then gloss-coating. John Firth's work inspires me to test these techniques, too. I do concede that there is a wider selection in the matte catalogs, so you might want to think about those, too. I can recommend Andrea and Vallejo for off-the-shelf, ready-made colors that are very good to work with.
Prost!
Brad