Hi Larry,
I think from looking at pictures of real tanks that the individual links would look a bit better. The reason I say this, is with vinyl tracks you get a bit of sag or bow from the road wheels to the idler and drive sprocket.
Look at photographs and you will see that on the real tanks these runs of track are straight (tight).
However the vinyl tracks look pretty good, I think the individual links would give a slightly better or more realistic look.
It all depends on whether or not you feel the time is worth the effort.
Regards,
Joe
Just remember, ignorance is no excuse for the law. - Moe