Aye, what Nimpimpy said - except for PvE use at that level of gearing I would probably go for the Silk Cuffs instead of Dreadweave, and "might" look at the Pendant of Conquest if thats the OP's only haste item. The Crit/damage will be more valuable for a long while than a smattering of haste will be
:
Vindicator's Silk Cuffs - Item - World of Warcraft
Guardian's Pendant of Conquest - Item - World of Warcraft
The Spellblade:
Merciless Gladiator's Spellblade - Item - World of Warcraft