I have one of these bottles as well as a couple of the Spark Pros. While this was a nice bottle in and of itself, and still better than a plain water bottle, I 100% think the extra money for the spark Pro is worth spending if you want a water-tracking bottle. I was not a fan of only being able to log full bottles worth of water. I don't get a lot of chances to refill, so I often refill whenever I can, regardless of how much is left in my bottle. That makes this much less useful. It's still handy to remind me to drink water, so now I mostly just use this one on my desk at home. I would say the Spark Tap works well for home or work where you have easy, consistent access to fountains to refill. If you're more on the go, and need to fill up whenever you can, get the spark Pro.
