Depends on your spec.
Affliction/demo -> s1 dreadweave can have 19 more damage if socketed correctly, or 7 more damage and 12 hit in exhange for the crit.
These trade the hit for crit, which is over-budgeted on low ilevel items. Hit is far more of a damage upgrade while uncapped. 25-40 gold, depending on your server's large prismatic shard price.
Destruction -> I wouldn't try it in quest greens and AH blues.
Or just use
http://www.lootzor.com/ - Insert damage/hit = 1, crit =.5 for affliction/demo builds without ruin and damage/hit/crit=1 for destruction/demo builds with ruin.