Silicone vs. TPU/plastic film: which collapsible bottle material is better?

Silicone bottles (HYDAWAY, TakeToday, BEAUTAIL) are firmer, easier to grip when full, and hold their shape better on a desk, but they don't roll up as small. TPU/film bottles like the Vapur anti-bottle pack down to nearly nothing and weigh only a couple of ounces, but reviewers note they're floppier to drink from one-handed and don't always stand up reliably.