I’ve also never used Tommee Tippee, so not sure how they compare, though I’ve heard good things :)
I hate plastic. I much prefer silicone, they look nicer as well. Easier to clean
I don’t know about these but when it comes to straw cups I go with Nuks newer one. I bought it for my daughter and I never have leakage or spill problems !
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I didn’t love it. The pieces are hard to put back together after cleaning and there’s so many tiny crevices for gunk to hide in. We got mama bear weighted straw cups from Amazon that have worked really well for us