I would check out the Eastman E10oo. It sells new for about $1000. I have owned their violins and mandolins, and they give your more than your moneys worth. Easy to resell as well. Unless you are very lucky, you probably won't find a Martin or Taylor guitar in your price range.

Before I bought an instrument, I would hunt around for a used instrument first. Lots of people expect to learn to play an instrument in a short time, become discouraged, and sell their instrument. Save yourself a couple of hundred dollars. Usually the case and accessories are included at no cost.