Hi
I recently received a used model. Now to be honest, I cannot claim to be an expert in easels and can not really compare this one to others. However, the Kostina is very easy to use and it is adequate for my needs.
The blades are solid and easy to move. They do jump their tracks from time to time but are easy to put back and this is not really a worry.
There is a ruler that is easy to use and helpful.
The build is reasonable. I wouldn't say that it is built like a Russian tank but neither is it flimsy.
All in all, if the price is right (whatever that means), I would recommend it on the basis that it is easy to use and that I have not had any problems with it. Please keep in mind that I am no expert on the subject of easels (thank goodness!) and can only rely on my limited experience.
Let us know what you think of it if you do buy it.
Regards,
Emile