6010 was invented before 6011...there is no advantage over 6011,,except a couple of amps lower,,6011 was invented to run on buzz box welders,,,6010 is a DC rod made for engine driven welders on the back of pickup trucks welding pipe lines,,,both are paper rods fast freeze and long arc...with todays inverter welders either one will weld nicely,,,,6011 is the most common now,,available near every where,,,I grew up on 6010 cause that was all there was,,,used 6011 on my buzz box and found it works as good as 6010 which is stricktly a DC rod...If you have to make a choice ,,,flip a coin,,,