For what.. PvP or levelling or raiding?
The Glacier Sharpened Vileblade is an upgrade all around, and if your armory is correct, you are using a green offhand.
Plan of action:
1. Mainhand Vileblade.
2. Offhand Desolate Soul.
3. ???
4. Profit!!
Also, higher ambushes don't always mean best DPS... If you're just fighting 1 mob at a time and moving on, white damage doesn't mean a lot, but even so, the MUCH better stats on the Vileblade greatly outweigh the... .1 speed on the Desolate Soul and Shark Stabber. Also, the base dmg on the Vileblade is better than the other two anyways, so the bonus dps outweighs the lost speed as well.
Edited, Jan 5th 2009 7:34pm by morgorg