The results I found most acceptable with Tech Pan, after much testing were with TD-3. Still, in the end, for my work I did not care much for it. Invisible grain, yes. Everything else about it was disappointing to me, including its extended red sensitivity. I tried working with it when shooting 35mm because like many, I went through a phase during which I thought with document films I could get a larger-format look out of 35mm. To my eye, it never comes close. There is simply no substitute for bigger film. So for 35mm I decided I would stick with films like TMX and work hard to get the most out of them. Just my opinion though. I've since experimented in detail with CMS-20, just for the fun of it, but that's just horrible.