Lanos II 2001 vs Vectra 1600 95

Dear all experts
I have a Lanos II 105,000 km from 0..I did not have a major problem with it. I have the chance now to switch to Vectra 95,1600 cc , 70,000 km (and I know the owner) with nearly the same price (+2000 LE).

Iam a family man with 3 kids and I travel from 6 october to Madinet Nasr everyday to work.
My Mechanic's opinion is not to switch (expensive spare parts and older model). All my friends and colleagues at work(especially the younger generation) are with the change (more stability, durability,better motor and spare parts not that expensive)
please advice ...especially vectra owners
THANKS