Is it good? Yeah. Its up there with the current best stuff available for WS generally. But its not head and shoulders over anything that exists. If you dont have Aias bonnet or heca cap even, then it is probably your best bet for WS. But once you get some of the fancy smancy gear, its just a sidegrade for the most part. On the upside, you can use it until you get something like aias and just toss it and fight lolMoogle again at that point for something else.
I personally redid the fight not long before the server went down (had the lv 75 standard choice of 10acc, 5atk, 3% haste for TP-ing) since it was obsolete in that form. But i havent picked another augment yet since I dont really see anything aww inspiring to make it into.
Currently leaning with a Agi4, WS+2%, MAB+3 for wildfire build on my rng since MAB is such a novelty for them. But i really not sure what id do if it was for thf onry. I am kinda liking the idea of eva10/STP 4 with 3% fastcast augments for an Utsu/Evasion piece. But the DD aspects of all these augment pieces are just getting overshadowed by new gear forcing them into niche uses, or holdovers until you get the new gear.
Aanalaty, Mithra of San d'Oria
99Thf/99Drg/99Rng/95Pld/Secret Job 92
Maat-1/1 Thf Meleed (pansies steal)
Some of mah gearz: http://www.ffxiah.com/player/Lakshmi/Aanalaty#item-sets
Join 'People Against The Heart Snatcher' and help put Thfs on the right P.A.T.H.S.