Really depends on what you are looking for but my personal favourite gear is: Hat: Crushers mechanical visor (this is just a hood with storm designs on it) Elegant version, Oyotomis Cowl of Vacancy Robe: Katzenstiens robe OR Smoggers Charged Robe (both are good I use Smoggers as Katzenstien hates me) Boots: Smoggers Germane boots but some people prefer the elegant boots Youkais Vacant Footwraps
This stuff has storm "insignia" on it, a quick google search will show you where to go for it (the name gives it away ) these bosses also drop design gear for other schools so just have a look through the drop table if you want any of that and there are a few more but I believe they can be found in the bazaar if you look through the gear level 15-40.
Other options people like are the armor set given from the Guardians Set in the crowns shop (can be purchased for 87,598 GOLD no crowns needed)
) these bosses also drop design gear for other schools so just have a look through the drop table if you want any of that