Between this:
http://www.amazon.com/Playtex-Gripper-Twist-Click-Colors/dp/B001OAKMEO/ref=sr_1_4?ie=UTF8&qid=1372825984&sr=8-4&keywords=playtex+little+gripper

and this:
http://www.amazon.com/Playtex-First-Gripper-Trainer-Colors/dp/B004E2H3PA/ref=sr_1_1?ie=UTF8&qid=1372825984&sr=8-1&keywords=playtex+little+gripper

? Besides the handle?

We're still currently trying these: http://www.amazon.com/Nuby-2-Pack-No-Spill-Flexi-Colors/dp/B003N49ML8/ref=sr_1_5?s=baby-products&ie=UTF8&qid=1372826128&sr=1-5&keywords=nuby+sippy+cup
to no avail. Lo just chews on any sippy cup, spout or straw! Hoping the playtex ones might work because you can squeeze them to make juice/water/whatever come out...