Which is better 70 GSM or 80 GSM?

A 70gsm Eucalyptus-pulp paper can use up to 37% less wood pulp than a standard 80gsm to make the same number of reams. Smart, huh? Also, 70 or 75gsm paper is often cheaper because the mills sell paper by the tonne, and you get about 50 more reams of 70gsm in a tonne than you do of 80gsm. 17-Dec-2018