I use this with cardstock almost primarily and I very rarely have issues with it feeding through. I do have to clean the rollers from time to time in order to prevent toner from tracking the rest of the page (I'm sure if I used exclusively regular laser printer paper it wouldn't be as much of an issue), but otherwise it is a great buy.
This is my second Brother MFC laser printer and they cannot be beaten for performance and reliability. When you take it out of the box, you can tell it is good quality by the sturdiness of the plastics - nothing flimsy to be found.
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