For several years the custodial department of our university has researched the best dry erase marker for the classroom setting that pleases the faculty, the custodians, and hopefully the budget. That said, Quartet brand markers are the best. 1. They erase cleanly through out the day. Faculty can easily erase with out a "ghosting" shadow of the previous writing. 2. Color dry erase markers clean easily once each day on whiteboard painted walls. Other less expensive color dry erase markers had to be erased immediately after use. Otherwise nightly custodial cleaning could not remove the color residue "ghosting" even with whiteboard chemical cleaner. 3. Quartet dry erase markers make a full strike mark and have good ink density. Other markers we tried would not make a full ink mark. It looked like only half the tip was making contact with the board. Or the tip was 'dry' from lying horizontal on the tray, needing to be held vertical for a moment to saturate the tip with ink.
I've used these markers at work and at church. They write well and are very bold. They also last a really long time. I like that you can see how much ink is left. They also work well to take off really old dry erase writing that's stuck on. All you have to do is write over it with one of these and then erase. The new and old markings will be gone.
There's nothing I detest more than a dry erase marker that loses its ink flow at inopportune times. These markers are fresh. Vibrant. Long lasting. Everything I could ask for in a dry erase marker.
Great colors. Good grip. Smooth writing. Easy to erase with or without dry erase liquid. Everything I expected from a reliable company. My son is very happy to use them over and over with the math sheets I bought him.
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