The printer prints quickly and the result is good. The grooves on the paper I also noticed at the beginning, you can see it only if one respects it. But for applications, etc. It is not suitable 100%, but I have a feeling the less, the "grooves". Unfortunately I did not manage the printer to be installed on 2 PCs (Win 7), there were always different printer installed and printing via WLAN always went only from the PC where the drivers have been installed as a last resort. Printing via Samsung App from my Android (4.2) equipment works great.