I'm using Tern P9 with 22" slim tires. Slim tires best suited for even road. For uneven road, it can be quite bumpy and have to watch out for big gaps as the tires could be stuck and caused one to fall.
Different bikes are for different needs and wants. Tern, Dahon, Bromptom or any foldies are suitable for our local roads and park connectors. Important is to try out the bikes and decide what you want that is within your budget. Different bikes have different feel due to many factors such as size, design, gear, mechanism, etc.