From my personal experience hair does last longer on a fine mono base. Even I was surprised why this is so. I started my hair replacement journey by a fine mono base! I wore the system for 10 months and even after 10 months the system was decent. The reason I discarded it was because I have a little sensitive scalp and mono base tends to be a little rough on the skin. I have visited several hair replacement salons in India for a cutin and have asked them the reason why hair lasts longer on Mono base. All of them gave me one reason that they tend to use less processed hair on mono base compared to lace base. In India majority of the people still use fine Mono base. Also, in mono base hair does not shed so easily. Fine mono base is great for those who are ok with a little rough base on skin and a comb over hair style.