I tried nearly all from balanced, agi based and str based. Personally I like str based builds most.
Imho it depends on:
 - playstyle (preferring 1:1, clusterfucks ...)
 - environment (open field, narrow castles, ...) -> battle/siege
 - length of the weapon (if the weapon ist short, you have to move to reach the enemy...)
 - weapondamage (e.g. piercing pick does not need a lot of str to deal damage)
Imo 5 shield is good. So you can use every widely used shield including huscarl. So I would go 24/15.