Review (5/5): I like!
I like these. Mostly, I wanted something that would hold my polish bottles still, so they wouldn't skitter across the table when trying to one-handedly trying to wipe the brush off. But I also wanted something that would hold my tall, skinny bottles so they wouldn't tip over. These will fit the bill.
I don't know how well bottles will "tilt" and stay put that way so you can get to the bottom of the bottle. Right now, they're not staying tilted. BUT I think they'll loosen up a bit with use and might be fine. And larger bottles like OPI, Revlon, and the larger Sally Hansen bottles do fit into the larger one, but it's a tight fit. The smaller one is perfect for Sally Hansen's skinny bottles and for Julep polish.
I haven't actually used these for a manicure yet, so I'm not sure how well the rubber will stay put on my work surface, but I can use one of those flat rubber things you use to open jars, and it should stay just fine.
Overall, I'm pleased with this purchase.