$200 is on the very low end of the price range for a toilet that works well! A toilet is a 30 year investment. Don't scrimp.
Kohler and others have some really great seats for familys with toddlers. They are soft-close, and have a separate toddler seat built into the main seat. The toddler seat simply hinges up out of the way for adults. A little step stool makes it easy for the kids. I just spent a week at my daughters house. She has these seats for her 3 & 2 yr olds. It is working very well!