Pros: stainless steel, beautiful design, comes with a carabiner
Cons: white bottles can get a little scratched if you're not gentle
I only have one EarthLust water bottle, but I aim to make it two shortly. Mine is the little 13 ounce with an owl on it. I adore it. 13 ounces is a great size when you're on the go...it doesn't get heavy, and it's usually enough to get you to a water fountain where you can refill. I took it on a trip to New York and it was incredibly helpful (especially considering the alternative was carrying around my boyfriend's 40 ounce Klean Kanteen). Not to mention, no one batted an eye when I took it in my carry-on empty.
I've seen almost all of the other EarthLust bottles in real life and when I had to make my choice (I actually bought four bottles and gave three away as gifts), I think I stood there for about 20 minutes because they were all so beautiful I couldn't choose.
It's probably a good choice to hand wash your bottle and to be a little delicate with it to avoid scratching the design, but it's well worth it.