My favorite part of this bottle is the option to remove the filter/straw attachment if you don't want it. Which makes room for slightly more water and sets it up so you aren't sipping through a straw to get your water out. The 'Steel' Groove bottle is actually nice and durable with minimal denting so far. It is a bit heavier than the plastic version, but it's not incredibly noticeable. The only real issue I have is the bite valve as it can hold onto some additional pressure which makes water squirt at you/on your stuff if you're not careful. I worry a slight bit about the valves durability, but no issues so far.