When i first played online on ESO i used the Spanish. I did terrible in my first25 or 40 games and had a low win %, since i stopped lvling them at 36.I never really utilized Spanish for what thier strong points were i guess ^^
After that I used german for 50 games and won 40 of them or something like that, i also used british and won 50% of my 40 games w them, and played i think 30 something games with Russia and won more than 75% with the motherland. Im currently trying Dutch =D
Used Russia first, but I was really bad then. Stopped playing online for a while, then came back and tried dutch. They were great until I started playing the higher lvl FFers. Now playing German, with a moderately fast FF and using mercs as defense until industrial when I get two factories.
Ever since demo i wanted to play ottoman, so i satrted otto, got a lvl 56 HC with about 80%, then got bored and changed to french and got to about lvl 20 and was ashamed, i mean... otto and french... So i started using spanish and dutch and im currently lvling em up.