I use the titanium shepherd hook stakes. Not normally found in stores, but nearly all the "cottage" tent manufacturers carry them. I really like these (a little stouter than others of their kind, and have fluorescent orange tops) from Mountain Laurel Designs: http://www.mountainlaureldesigns.com/shop/product_info.php?cPath=43&products_id=61
MLD is closed until after the New Year. You can also get them directly from Vargo: http://www.vargooutdoors.com/Titanium-Tent-Stake-(florescent-orange-head)
Gossamer Gear has similar stakes, but the coating is yellow, not orange, harder to see where some of the local vegetation has turned yellow. The stakes aren't quite as robust, either. http://gossamergear.com/shelters/shelter-accessories/tite-lite-hiviz-tent-stake.html
I really like the fluorescent orange stakes; with just the gray Ti color, if a stake pulls and flies off into the grass/bushes, you'll never find it! I spray paint the gray ones I have, but this has to be redone at least yearly, usually more often. I've had no problems with the coating on the MLD stakes.