My priest has engineering, and I'm having trouble figuring out which belt tinker to use with her. She's shadow, and already has the foot speed enchant. The speed bonus would be kind of redundant, and it has a tendency to explode so that's a no go. I've heard that the backfires on the shield tinker can actually cause you to gain large amounts of threat so that could be bad unless Fade would help counter-act that?
I'd like to use a belt enchant, but not if it's going to potentially cause issues in a raiding environment. Anyone have any suggestions?