I bought these to write on plastic tags for my garden. The writing has held up in the sun and the rain- that part is great but the writing was blotchy and not at all what I was hoping for.I bought these to use at my shop since people like to steal them when they're left out.The ones we have are more expensive, so I went with these because they're re-usable and seemed like a better option since mine would be unique to me and no one could steal them without getting caught easily.Unfortunately the color is not as bright blue as the cap would show. Writing harder is darker, and lighter isn't a problem and leaves a better blue.However the outside she'll is darker regardless and it will be inconsistent.They are also more greasy than waxy. This makes them harder to remove, but not to smear. They will leave more residue behind and make a cloth much more blue than when the same pressure is applied with the Phano.However they write much cleaner regardless of surface - Raw cast, scotch right cast, machined finish, scotch right finish. The Listo works better in all applications.Overall I like the listo's a lot more. The only problem is they do not match the color advertised on the cap and they are more greasy than waxy so I won't be able to use them at work.It's hard to tell the difference in some pics, but the Listo leaves a lot more material than the Phano when wiping off.Writes on everything. Even my soul.What more to say. They work.My dear wife is a resident in a nursing home. She stimulates her reason and all her senses by working puzzels. The acid based, pulp paper clogs the pens and the porous paper sucks the liquid from the Hi-liters and bleeds thru to the otherside so as to render all of the other writng insturments useless. These soft crayon pens are the ideal solution as they mark well, last long are are highly visable. Green is her prefered color.beautiful color ...better than black or red ...love handwriting Morning Pages w this on blue 24# paper ...love sketching w the Listo Blue ...As an EEG tech, I use these on a daily basis. These are the best marking devices I can find, way better than the tear away pencils by a LONG shot!If the leads were as blue as the caps of the pens, these would be great. The leads are, however, the darkest navy blue I have seen. I was hoping for something more like Phano blue, which is almost an exact color match for the caps of these pens.