I have worked with all the types currently available and highly recommend spending the extra loot for the product James has made. It matches the original shape better, doesn't come "kinked" like the grey stuff, and holds modern urethane paints well with no need for flex agent. It has held up very well in my durability testing of temperature and UV extremes over almost 3 years now both painted and as molded color. MUCH, MUCH, better than the other brands! If you paint it (or just clear it to get a gloss match) follow the instructions I put up starting on page 14 of the PY thread.