Overall this is a nice looking set of chopping boards and knifes, admittedly they do have some faults but i do not regret buying them.
I have a small kitchen so space saving equipment is a must. I was impressed when i received these chopping boards and knifes as a gift. They are nicely packaged and look great when in the kitchen.
I have several Joseph Joseph products and have always been impressed with their quality. However i have been a little let down with this product - I'd agree that the surface of the boards is easy to mark, especially if using large serrated knifes or heavy chopping. Having said that i'd expect them to get a bit of wear and tear as they are chopping boards after all and are used regularly.
It redeems itself that you cant see the marks when the boards are in the holder - that still looks as good as new.
I haven't noticed that these boards slip - i have a wooden work-top. You could try a tea towel underneath if you have a granite work-top ?
These chopping boards do have good redeeming features - they are space saving, stylish, easy to clean and dishwasher safe. Overall i am satisfied but, having said that, if i was a more serious chef i would invest it a higher quality product.