Only the second OVA is worth watching.The first one is so rushed and about someone not that important to me.
The third one is well... You'll understand quickly.
Hmm, indeed. I watched the first OVA many years back, but I just watched the Phoenix one for the first time. Layla backstory is always good, since she's my favourite character and all.
Her short hair looks nowhere near as good though. I blame Sora for that.