I use the interfit to gang 3 430's w/ pws and everthing fits well. the interfit is built like a tank and is its own umbrella bracket so its very versatile. I also love the adjustment handle on it. But it does look like the triple threat bracket probably distributes the light a little more evenly. As far as triggering goes, I use the wired approach vs optical. I can trigger up to three flashes from on pw using one flash on the pw and two hot shoes for the other two flashes. the hotshoe flashes are connected with cables to the flash port of thw PW. This seems to work well for me, but most of my shooting is confined to fairly small spaces. If you need to spread the lights out, then optical triggers or additional pws are the way to go.