This is the only PLA filament I have been using in my printer & have gone through over 3 rolls without problems. Their price has been $29 a roll with free shipping, but they just put this on sale at $19 a roll. They seem to only carry 1.75mm dia. The PLA is Grade: Natureworks 4043D
http://printinz.com/
Their ABS is also on sale at $19 a roll, but I have not tried any ABS from them. Their website shows the ABS is made from Grade PA-747 material manufactured by the Chi Mei Corporation in Taiwan.

-David