For me, of the PS1 FFs (that is, VII, VIII, IX and Tactics) it's by far the weakest. It has the dullest story (terribly straightforward), the most annoying characters (save Vivi of course) and the less customizable battle system (come on, I thought we had moved on from the Thief character/Healer/Spellcaster/Tank/etc. gameplay). It's not a bad game by any means, but the gameplay and story is too old-school and neglects much of the improvements found on its predecessors.
It's not like it should be avoided at all costs, but I think you don't miss anything by skipping it










