I've had my mug for 7 years and use it intensively. I believe I can bring some contributions, as a hard user and someone who has been using the same piece for so long.
My version is stainless steel, so I never had problems with paint peeling. It is quite scratched, especially because sometimes I carry it in my bike's bottle holder. And I once dropped it on the floor and dented the bottom, which makes it a little wobbly when placed on surfaces.
One problem I had with the top lid is that, through some micro-hole, some water got in and I can't empty it at all. Despite this, the two lids continue to seal perfectly and work well.
The filters, despite having accumulated residues (I intend to buy the Deep Clean Micro-filter Cleaner soon), have no holes or weak points, and continue to work perfectly.
I am very satisfied with this product. This bottle accompanied me through different phases of my life, including bicycle trips to remote places, allowing myself to prepare coffee even on a deserted beach, more than 20km from any sign of civilization.
I already bought two as gifts <3
The only defect is that it doesn't ship to Brazil - I asked a friend to bring mine from the USA, just like I should do with my next one (I'm planning to keep two, one to use more for tea)