I've been using MakerGeeks "Raptor" PLA. Aside from the ~$15 premium per Kg Roll over their standard PLA prices, I really, really like it. Give/take some growing pains, MG has been a reliable supplier so far. I've located but not yet tried Proto Pasta's HTPLA v3, (Heat Treated PLA) which seems to have similar specs.

Does anyone else have relevant experience / opinions on these materials or others that are similar?