Water Filter Bottle vs 27oz Wide Water Bottle with Loop Cap: which is safer?

Where these two actually differ

• We flag Bacterial growth in filter media and dead space, Plastic bottle body leachate (oligomers, residual monomers) and Filter cartridge integrity and loose carbon particles on the Water-to-Go and not on the Klean Kanteen.
• We flag Cap or closure contamination and Bacterial or mold growth from moisture retention on the Klean Kanteen and not on the Water-to-Go.
• The Water-to-Go is Activated carbon and other filter media, plastic bottle body where the Klean Kanteen is 18/8 stainless steel, no interior coating, which is most of the difference in these two grades.
• The gap is 30 points, wide enough that this is not a close call, and the Klean Kanteen is the one to buy.
• We are less certain about the Water-to-Go grade, at 55% confidence against 92%, because it discloses less.