I'll probably pick up FFII since i bought FFI awhile back and near completing it The level up system in FFII also intrigues me
Yea, the FF2 system isn't really bad at all IMO, it's just weird. And you can't say it's bad because it's 'broken' either; every FF has it's own very exploitable aspects: Ninjas in FF3, Materia in FF7, Aura in FF8, Trio of 9999 in FF10, etc.
Quadruple Dragoons in FF3! And I picked up FF1 - It's brilliant, doesn't even chew the battery. Taking a short break after an hour ish and only lost 20% of battery!