I have four of the Flashpoint Streaklight 360 units (same as the Godox AD360.) I'd like to add two more units so I have backups but I'm torn between getting the original manual units which are cheaper or the newer versions with TTL. I'm not sure I would use the TTL function that much. I have been using Canon cameras for years and have owned a 430 EX and now a 600 EX-RT and I find Canon's E-TTL system to be more finicky than I like. I wouldn't photograph an event with the speedlite in manual mode but, for off-camera studio lighting, I'm not sure it would save me much effort when having to fine tune the settings.
Other than the addition of TTL and the integrated 2.4 gHz receiver, what advantages do the newer versions offer over the original manual ones? I'm trying to decide if it's worth the extra money for them. (I do own an X1 transmitter for Canon and have a 2.4 gHz receiver for one of my manual units so the trigger wouldn't be an issue. I can always get three additional 2.4 gHz receivers for my older units.)