Baby Einstein Sippy cups made by Playtex

The baby einstein sippy cups although made by playtex are not the greatest quality. I have many playtex sippy cups that are much better than these. I bought them because they were on clearance awhile back at Zehrs and my daughter loved watching Baby Einstein so I figured she would enjoy them. They are bright and colorful making them attractive to babies but inside the lid the rubber stopper is,for some reason, much smaller than the regular playtex sippy's and they tend to leak or even fall out which also makes it leak BIG TIME!! You child will have fun playing in the water but will you have that much fun cleaning up?? lol
These run for about $7.99 (at toys r us) but I wouldn't even pay clearance price of .10 if I knew what I knew now.

Thanks so much for the info...I was debating getting one.