My main flash for doing photojournalism is SB910. It works first time, every time. I have a couple rubber bands on it to put my Minute Maid, home made, diffuser on it if needed. I know someone out there has made one.
My backup WAS a Sigma 610. Well, the short story is that I had to use my backup, since Nikon strobe was in my wife's purse.
The thing was dead. Normally I put tape over terminals of devices that don't get used. I leave the tape showing to remind me to pull it when I need the device. Flash meter has it and back up flash "should have."
I talked to Art about the flash he has, and bought a similar model. Its a Yong Nuo YN685. It was 104.00. It will do much more than I need. I looked at this one and a Godox. The shoe on GoDox supposedly has one contact point, this had four contacts. I read as much as I could stand, then made the purchase.