You guys are using titanium wire???!? You should read the article on the Stealth Vape webs... Just kidding.
Read all 89 pages (after the rayon thread it was a breeze). Had been thinking about trying it before, but a) the Mini M solved TC for me and nickel worked very well, and b) I didn't want to guestimate temps. But now with the Ti firmware I switched 3 days ago. First coil tasted funky, and yeah, the wire I got was from Zipipv indeed. Cleaned it, made a spaced coil, 26g, no pulsing, just fill & vape.
It could be self deception, but I'd swear it tastes crisper and cleaner than Ni200.
One thing: I'm trying to find an old discussion I read back when a company put TiO2 in some juice and everyone freaked out. One guy however who works or worked in a plant that produces a lot of TiO2 showed a Google map pic: the hole terrain where he worked was white as snow. Yet nobody ever gets or got sick beyond "normal" stats. Not saying it is harmless, and I personally will avoid dull/white/grey too, but if something weird would happen to your coil, it doesn't have to mean you should freak out. Nothing cast in stone yet obviously, but to me Ti1 looks very safe and works very well; together with rayon I'm getting a fantastic vape, so thanks for the wealth of info in this thread!