It really depends on your application and printer as to which postcard would be best for you. The first thing is that you need to make sure that your printer will support the paper weight of the postcards, by checking our “find your paper” tool . If your printer is not listed, please contact us, and we would be happy to look it up for you and add it to our database.
If you are looking to just print color text or simple graphics you may like the 4KS (standard white) postcards. However, if you want to use photographs or high resolution images you may like the 4KPL (premium light) or 4KP (premium heavy) postcards, as they have a smoother brighter white finish that looks better with graphics or photographs.