Unless you're evil, which apperantly you're not, take Minsc.
The thing with the evil NPC's is that they're only good at what they're good at.
Minsc is good at fighting and a good laugh...
But, In your case, I would switch between the NPC's, and Minsc doesn't have a personal quest so Korgan may be more interesting. Then, you can dump Korgan and take another NPC with you.
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The last arrow of Legolas kindled in the air as it flew,
and plunged burning into the heart of a great wolf-chieftain.
All the others fled. -J.R.R. Tolkien, The Lord of the Rings
Legolas, mourning for the USA