The Predator BK doesn't have a joint collar, which I think is very poor design for a break cue. I tried one & it felt like the joint wanted to give up & crack thru.
The Mace (I've never used one) is made by Rick Howard, a long respected cue maker, has a collar to support the joint from lateral stress, and has a long track record.
You're referring to a break cue AND a break/jump cue. Not exactly apples to apples.
If confined to these two cue choices, I'd vote Mace hands down...
But you will hear MANY other good considerations. A lot of it depends on if you are determined to NOT have a specific jump cue.
Jump cues jump. Break cues break. Break/jump cues do both, but almost inevitably, their jumping ability is short-changed in the bargain. Nature of the beast.