The Molotov brand are excellent but... and this "but" is very important; after some months when you take the pen and paint something the results were awful, just not chrome but something like alluminium. So if you want best results, buy the pen and paint aaall the stuff that you have that must be chrome.
If you painted something once open, that remains chrome, the decline is about the ink inside the pen, but not once it´s painted.