I own flat base cymbal stands from Canopus, Gibraltar and pre-Atlas Ludwig. My preference in order are the Pre-Atlas Ludwig, followed by the Canopus and then the Gibraltar.
The Ludwig is very lightweight, I have used rides as large as 22" with no issues on these and they have a toothed tilter. I own 5 of these and they are in my main gigging hardware package
The Canopus are very lightweight and sturdy , they have a toothed tilter as well. I have only had these for a few months, but so far no issues whatsoever to report. They were more than double the price of the pre-Atlas flat base stands.
The Gibraltar are probably double the weight of either of the Ludwig or Canopus stands. They have a much wider footprint. Nice tilter and they are available in straight or boom. They are also less expensive than the Canopus.
The current DW 6000 series flat base are very nice but more money than any of the aforementioned stands. The new DW ultralight flat base stands look like a winner.