The hobart rods are good, though some weld better than others. I use Lincoln for 6011...much better. 7014 and 6013 Hobarts are good. I like the 7018 Hob's. The Harbor Freight stuff is quite funky. A reasonable alternative, that I have found sold many places locally, that probably doesn't get enough press is U.S Forge. I have used all those rods quite well and they are available in most common weights that you would want. Its not a "Name" brand per se, but it is generally a good quality rod for the price.

See: http://us-forge.com/Products/Welding/Electrodes.htm