Bringing up an old thread. I like SEM products as stated above. They are extremely durable, But expensive. However I recently decided to do faux patina on a new tank to match a 39 Columbia. The hues are numerous and an odd color to begin with. That being the case, I felt I needed a wide range of colors. I ended up trying Valspar from Lowes Home Improvement due to price and accessibility. For a spray can paint, it is extremely easy to work with. No problem with recoats or layering different shades over each other with little wait time between coats. Also did not react negatively to use of other brands over it. I use water when doing faux patina jobs, and this paint held up fine to use with water, which is not always the case with spray paint. I have used a lot of spray paints, but Valspar really surprised me in terms of ease of use, layering, mixing, use with water, etc. Durability has not been tested yet, as the project is still ongoing. But I used krylon primer on pre-rusted metal, krylon in one base shade, Valspar in two base shades (even on a wet rag), then krylon and Walmart brands on a wet rag over the Valspar which was not fully cured. I had no wrinkling or removal, no peeling or otherwise negative response. I will likely try Valspar on future projects, especially with the numerous shades available. It makes it easier to simulate fading or darkening.