Sothe IV's

Speed is Sothe's most important stat, so I'd go with either -Def or -Res.

As for builds, it really depends. My Sothe has Peshkatz, Life and Death 3, and Windsweep 3 for safe (de)buffing, not to mention his insanely high attack even with a neutral attack stat.

+spd -res is best, and all you really need to do to build him is slap on desperation and give him a +3 spd seal. You can play around with specials and weapons, but his base kit serves him really well.

id personally get spd+ def- as he will mostlikely be against mages or healers rather then common DC melee