I love this little bowl. I also have the 19 mm version. I'm not sure why I prefer this to the bubble or funnel, but I've tried all three from GRAV and you can't go wrong with any of them. I have dropped this little guy on my granite countertop a few times, and it's unfazed- no chips, cracks, etc. I have seen other bowls succumb to the granite countertop, so I know this thing is solid.