ninjatek armadillo.
expensive but ridiculously tough. Also prints exactly same as pla - I know this because I made the mistake printing somthing with my armadillo sample, thinking it was the end of a roll of pla.
Worked fine :-) waste of armadillo, but printed great.

also innofill pro 1 - another premium pla based material I believe - though last time I looked innofill weren't saying exactly what it was made of. Prints great though.

pet-g is probably pretty goof for gears too.