I would agree with Sloppy Joe, the HexTronic would be a good choice. I have about 18 of them in various foamies, and they have been working very well. When you go to the hobby city website, be sure and select the ones that are stocked in the USA warehouse. They are a dollar or two more $, but have even better internals. I will update this reply later with a link.

Here ya go!

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=8306&Product_Name=HXT900 _9g_/_1.6kg_/_.12sec_Servo_(USA_Warehouse)