I care about the environment so that's why I bought the Ekovac. It's big enough for a bag of coffee and keeps it fresh for days. It's so easy to use as well, just press the button. I got three of them to give as Hanukkah gifts.
Lid seems to slide on and off more smoothly than the larger sizes. Nice size for me to keep a small amount of wheat grass powder fresh while keeping the bulk in a big tub in the fridge, gonna buy another to use for homemade toothpaste. I really like the smooth slide of this lid and my powder never goes flying while taking on and off.
I have relied on Tightvac's Vitavac to keep my fragrant herbs from stinking up the place. They work as advertised although they must be kept clean for best results. When I dropped one and cracked it, I felt as though I had to replace it immediately. I ordered a four pack and they sent a fifth one free!