Rogue epic + worn haste item for quicker backstab options

[Nomand]

Hello all,

My rogue is level 40 and is about to acquire ragebringer. My initial thought was sweet that will be my haste item and wont need to buy a 3rd spiked seahorse hide belt for my toons. But from the reading I’ve been doing the haste from epic wont shorten cooldown time on backstab. Soooo I have a velium swiftblade in off hand (I actually planned on replacing this weapon) it has 36% haste would this do the trick at shortening BS cooldown and be a little more effective then a spiked seahorse hide belt 34%? Any insight or suggestions on other affordable options would be appreciated?