My LO is great with the sippy cup except i think its tsill to fast for him...he "chokes" a good amount of the time. Just seems like its too fast like its going down the wrong pipe pr something.
Currently Im using playtex...Ive tried the Nuby cup and he does great EXCEPT he barley drinks he just knawls on the spout so i think thats why he doesnt choke HA!