>Has any solid research been done in reference to performance after re-indexing before verses after defragmentation of the drive?
I don't think so. But in case you didn't follow the thread #
742043 Fragmentation - why it is usually good for VFP native data, you may want to take a look at it now.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)