I've been using a reusable 36oz/1L plastic "flip lid" bottle from Bezos's market - this is my third one (sadly replaced almost on a yearly basis) since I keep accidentally breaking the lids.
It practically comes everywhere with me - walking, cycling, in my backpack. This lid is starting to crack at the hinge and the latch though, but don't really want to replace it with the same thing again.
How long have you had you had your current bottle, and how are you finding it so far?
I've had a flip-top zojirushi for more than 5 years. It replaced one of the same, the lid eventually cracked after about 6 years from being dropped so many times. This one has been dropped less. I have a new one in the pantry for when this one eventually dies. It still insulates as well as the day I bought it and the flip mechanism is just as satisfying.
My criteria: pocketable (not huge diameter), insulated, covered to keep work dust out of it. Sometimes the metal bottom gets a bulging dent when I drop it, I use a hammer to flatten it back out.