The important statistics for scouts (except bards, they are odd), as far as I can gather, are:
strength: increase the damage you do with melee.
agility: increases your power pool and avoiding attacks.
intelligence: increases your damage with poisons.
The other two stats - stamina, and wisdom - improve your defensive capabilities and are good but not essential. The traditional scout races (ratonga, halfling) have really high agility, but for pure damage intelligence and strength do more for you IMHO.
With this in mind, the brigand races that would appear to be good are those with a combined strength, agility, and intelligence that exceed 59.
Ogre: 30 str, 25 agi, 15 int (70 total) - racial abilities for +5 str, +5 int, slam damage proc
Ratonga: 10 str, 30 agi, 25 int (65 total) - racial abilities for +5 agi, hate reducing ability, poison damage proc
Fae/Arasai: 10 str, 30 agi, 25 int (65 total) - racial abilities for +5 agi, heat damage proc
Gnome: 12 str, 25 agi, 27 int (64 total)- racial abilities for +5 int, hate decrease ability, heat damage proc
Half-elf: 17 str, 25 agi, 21 int (63 total)- racial abilities for +5 agi, +5 int, slashing damage proc
Dark elf: 13 str, 26 int, 23 agi (62 total)- racial abilities for +5 agi, +5 int, +3% power pool
Halfling: 15 str, 30 agi, 16 int (61 total)- racial abilities for hate decrease ability
Human: 20 str, 20 int, 20 agi (60 total)- racial abilities for divine damage proc, +3% power pool
Froglok: 16 str, 24 agi, 20 int (60 total)- racial abilities for +5 agi, hate decrease ability, dispel various damage effects
Iksar: 18 str, 22 agi, 20 int (60 total)- racial abilities for +5 agi, +3% power pool, crushing damage proc
This is a purely numerical analysis, however, and I recommend you play the race that you like the most.
Edited, Sep 20th 2007 2:34pm by dethwite
Edited, Sep 20th 2007 2:43pm by dethwite