I am a long time Brita Reusable water bottle user and was reluctant to try something new.  But I LOVE this bottle.  It doesn't make a weird squeezing noise when I use it like the Brita bottle.  I love that you can close the top to keep it clean.  I love the handle and the design is great.  My only regret is that there is no filter and that when you release the mouthpiece you have to face it away or you get water in the face.