The Predator Roadline Cues are top quality. They typically have more plain looking cue butt than other Predator Cues (cosmetic differences.... Prettier Cues with more inlay work cost more).
So, first decide if you want your roadline to have no wrap on the butt or a linen wrap. I used to play a Roadline and I preferred no wrap.... Over time the linen wrap will wear, and it doesn't extend to the end of the butt.
You're most important choice is choosing your cue shaft... Go on the Predator web site and do your hone work... If you're lucky, friends or strangers at a pool hall might let you try their cue.
I don't think there is a better wooden shaft than the 314-3, but the Z3 and Vantage options appeal to many.
Cheers