I have laid my rulers on top of each other and aligned the lines. Most of them do match up.
The ones I have now that I actively dislike are the Quiltrr's Rule ones becauikse of the thickness of the grids that are used for the measurement lines.
Many people love the Creative Grids line of rulers. I prefer the ones with fewer markings ( sometimes I get easily confused) like the Olfa frosted rulers.
As far as which to keep - which ones do you prefer? Or like the least?
When I started, there was little choice for rulers. Now it seems like something new is being introduced quite often.