Most Useful Classes Are SMN and BRD IMO, With SMN slightly ahead in my book.

SMN
- In Battle REZ
- AOE Bind for 20 Sec
- Eye for an Eye
- Blind
- Heavy
- Super Virus
- Wicked AoE DPS (Dots+Contagion+Shadow Flare+MiasmaII+Enkindle+Aeriel Slash+ Blizzard = Death For All)
- Wicked Single Target DPS( 1300+ Festers Crits )

BRDs
- Healers Best Friend
- Mobile
- Silencer
- Only Class with 100% DPS Uptime
- Great AoE DPS