I'm a mathematics student looking to invest in a good chalkboard for my room. I currently have a cheap Quartet but I find it is not very good compared to chalkboards at my school. It is not very smooth and doesn't erase cleanly. I have even purchased the porcelain Quartet and found it still is not very good.
At my school, I have seen a swivel Marsh industries board and it is really smooth, erases very cleanly. However, I do not know what brand is used on the walls of the classrooms.
Is there a specific brand of chalkboards used in colleges? What is your favorite brand?