Baseline plastic is cheap but has excellent grip (even in the rain). Usually found in starter Sets, baseline plastic is what all discs used to be made of back in the day. Some advanced players also like to throw baseline midranges and putters due to grip and trust as they beat in! These plastics usually start kind of overstable but the discs get straighter as they are used more and more. The plastic types are named Prime (Dynamic Discs), Retro (Latitude64) and Origio (Westside Discs).