Get one that has the print heads made into the cartridges. That way, they get replaced when you change the cartridge. However, inkjets that work just fine in a S&B will clog and fail in an RV, partially due to the changes in temperatures and environments. Lasers tend to do better, but cost a lot more, especially if you need color. On some of the inkjets, the cartridges will cap and seal when power is removed. Depending on what you are using it for, buy cheap and replace might be the better option.