I agree on the Zuma 125. I have a nearly new one. The speed is ok with me, but I don't like the fact that it is not freeway legal. I-8 from Phoenix to San Diego is 400+ miles of practically deserted freeway, and I have ridden the Vino 125 on it, but I risked some serious charges. Since it is illegal, if you were stopped by a cop you would get a ticket. Then you would be stranded, and have to have the scooter towed to a point where you could get it off the freeway. Then you would be stranded again, and might have to call someone from 400 miles away to come and get you. I decided not to risk it anymore.
I could have bought a Honda PCX150. I didn't like the looks of it (sort of a mini maxi design) but it was freeway legal. What prevented me from buying it was the 3 hour valve adjustment procedure, as opposed to 15 minutes on the Zuma. Honda messed up on that bad.
I suspect the Zuma 125 is 125cc because it is based on the Vino engine, though it is about 5 mph faster and has better acceleration.
2002 Vulcan 750 (being repaired, engine has to come out) 2013 Royal Enfield B5
2001 XT225, 2009 Genuine Stella
2012 Zuma 125, 1980 Puch moped