All modern versions offer their own charm. I have had the pleasure of handling most regular production modern world timers and find them all special in different ways. One simply can’t go wrong among the choices offered.... personally for my own lifestyle and preference the 5230 is the most formal with its flat bezel and most elegant. For more casual look I do find the 5110/5230 series more relaxed. Funny to read how different forum members perceive this differently.
Here is my only world time piece saying a quick hello: