It is +5 crit. The bonuses when it comes to synthweaving are as follows for the SI and the SW:
SW : +5 crit synthweaving (Jaesa), +5 eff archeology (Jaesa), +5 eff underworld trading (Vette)
SI : +10 eff Synthweaving (Ashara), +5 Crit Archaeology (Talos) , +2 Crit Underworld Trading (Andronikos)
And when you add the +5 crit to synthweaving, the SI outclasses the the SW. P.S. Both SW and SI can get the droid
So again, what should I do for my SW. I am leaning towards biochem now simply because there isn't anything else.