Everything Drex said is true.
Here's a chart a friend of mine made demonstrating the difference visually.
(set 1 = Yigit+other stuff w/ sanction refresh / set 2= high hmp items+sanction refresh)
http://i155.photobucket.com/albums/s...0secondgc8.png
As you can see Set 1 wins the higher hmp set 2 the first 27 seconds, but right at that 2nd tic it is won and kept by the better set 2.
If you know you're only going to rest for a few seconds use refresh. Heck use refresh whenever standing and not doing anything. It's free MP. A simple concept. BLMs getting 1MP every 3 secs during "30 minute" battle is 600 free MP (more realistically less since you'll want to nuke and do stuff)
If you want you can combine both hmp and refresh by swapping in refresh for six tics in the beginning then two tics everytime afterwards whilst changing back to hmp in between. The hmp calculation is done right at the second so this swaping is possible.
XI Wiki


