I have already been buying Fisher-Price Link-a-Doos 20 Link Pack for the past almost 1 year. Fisher-Price Link-a-Doos 20 Link Pack wuth brand "Fisher-Price" is the best on the market.

Fisher-Price Link-a-Doos 20 Link Pack Features

• Convenient pack of 20 high quality, teethable links
• Attaches to stroller, car seat, high chair, swing, and more
• Made easy to switch toys around frequently
• Enhances baby's development with fresh new sights, sounds and textures to explore
• Extra links to take along extra toys

These Fisher-Price Link-a-Doos 20 Link Pack way out perform some other brand including major brands and department store brands. The major selling points for me are hight quality with low price.
With all the places baby has to go, you could use some extra links to take along extra toys. Use this convenient pack of 20 high-quality, teethable links to attach favorite toys to stroller, car seat, high chair, swing, and more. Babies need a variety of stimulation throughout the day. The link-a-doos system makes it easy to switch toys around frequently, enhancing baby's development with fresh new sights, sounds and textures to explore. Fisher-Price Link-a-Doos 20 Link Pack even better than expected - highly recommend!!!
Brand: Fisher-Price

I believe, explains the few complaints respecting Fisher-Price Link-a-Doos 20 Link Pack not fitting or leaking.
Hope this Fisher-Price Link-a-Doos 20 Link Pack comment was usefull!