Usually it's an age thing but not always ;)
If you were old enough to see the OT when it first came out I imagine you'll have a tendency to prefer the OT to the PT.
That said....there are some darn cool PT lightsaber designs!
Like the Obi Wan TPM/AOTC, the Dooku/Tyranus AOTC/ROTS, and the Mace Windu AOTC/ROTS.