Well depends exactly what you're trying to go for. If you are in desperate need of gold, get the golden touch/burden augment. If you need XP get the disciple. If you want to become feared, there's an augment for that, if you want to hit harder or take less damage there's those too. I use a combination of two augments which make me extremely hard to kill. I use Lucky Charm (Decreases damage taken and increases damage given) and the ghoul augment (Every time you hit them with that weapon you drain their health). So it takes them longer to knock down my health and even if they do with a few swings I'm back to full health.
We're all going to die some day, I intend to deserve it.