I have shot a few hundred 230gr plated with varying light-mid charges of titegroup. My personal experience might be different from yours. I'm just adding a personal opinion. I'm finding that my guns get very hot, and after only a couple of mags, my guns are filthy. Maybe the brass I'm using is a little harder than normal, but it seems like it's not sealing the chamber. The lead thing is just what I've read while looking for reloading data - apparently smokey due to lube. I have not used it with lead.
I do know a bunch of guys that love titegroup (in 9mm), but For some reason I find it dirty there too. ¯\_(ツ)_/¯
Honestly, I like 700x lol. It's not clean in light loads, but it works cleaner for me without the heat and scorching. I also load unique, but for more mid-range loads. In .40, I LOVE 800x (except metering it).
I'd love to try some 231 if I could find some. Apparently the VV powders are clean and accurate.