It is the best marker that is available on the market. Once you use it for a few years and use others as well, you will understand the huge difference. If you want to write thicker, simply reduce the writing angle. Also, when the tip wears out, you just remove it and turn it upside down and it will be like new. Essentially, you are buying two markers for the price of one. Don't think about it. I speak from vast experience. Buy as many as you can.

Good marker. It writes smoothly and doesn't leave any residue - with one swipe of the eraser - even if I erase the board hours after the lesson. There is a claim about the marker that even if someone forgets to put the cap on for a few days, the marker tip doesn't dry out, but I haven't tried it. It is easy to refill from the front.
Useful information:
1. The tip has a writing thickness range from 1.5 mm to 3 mm. To achieve the 3 mm thickness, one must press the tip on the board until the desired result is achieved. Of course, if they later want to write in a smaller thickness, with this specific marker, they won't be able to because the tip doesn't retract.
2. The compatible ink refills are Legamaster (which are more cost-effective) and Edding BT.

Update on evaluation: the initial ink of the marker doesn't last long.