Pros: portable, useful, light, well constructed, great for hand-me-downs
I actually got both of the ones I have (and the trays) on craigslist. They're SO USEFUL. Ever since my daughter could keep herself upright... she sat in these things for almost a year. We'd bring them with us to restaurants that didn't have high chairs, put her up on the table with us, and she could be a part of the family. The tray is awesome, too, because it's so easy to clean! Will DEFINITELY be using these with future kids.