It can sound scary riding at 30mph or less in traffic, but there are ways to ride that speed without getting run over. It's nice, too, to have the option to go fast when you need, but as a first moped, you might want to hold off on warp speed 'til you get a feel for it. (I'm assuming this is a first bike, sorry if I'm wrong.) Just more to worry about with a kit when you're learning. Nice to appreciate the ped for what he is and then build him up when you feel comfortable. Okay, I'll step off my 'dad' podium now.
Tomos are good basic, easy to find parts for, easy to modify when you want a little more. Good peds imo. Good luck!