I got cheap refurbished ink for my friend's new Brother MFC-J1010DW. The cartridges do not snap into place like the OEM ones do but the ink doesn't move at all like other printers usually do. I worry about the ink leaking. I returned them and got nicer ones from LD Products and they have the same issue. LD told me that they are not legally allowed to use the same exact design - no one can. It doesn't make sense for them to make ones that do not snap into place.
Here's what the OEM looks like next to the LD Products:



Here's what the OEM looks like next to the LD Products:


