I've recently got a Dominiak Curly deluxe. William was great. Built the cue to my specs, 30" shaft, 19" balance point, 12.75mm shaft, talisman tip, etc...
I do not have a Predator cue, but have played off and on with a Predator 314 first generation shaft (3/8 -10) on a mcdermott EJ-3 butt or my Dieckman butt.
The predator feels...very neutral, If I break with it, it is NASTY, explodes the ball... playing it really feels like nothing special too me... (oh yeah - original tip)
the Dominiak... well, I haven't had it long enough to REALLY make a good determination. It has a longer pro taper. It rewards a good stroke. Seems to play really well if you are true. If you get lazy, then it'll reach up and smack you. Breaks suprisingly well...
I've got a couple of cues now and they are all very different. I'm one of those people who is constantly trying different things to see if they make a difference (joint styles, ferrules, tips, balance points, weights, etc)... However, with most all of the cues I own, the same thing is very true. If you stroke the ball well, keep the cue level, do what you are supposed to do, the cue works. As everyone likes to say, it's the indian, not the arrow...
I'd get the dominiak... Made in USA, they are VERY accomodating and a nice product