YN560 or Vivitar 285HV (noob question)

I have 1 Vivitar 285HV and I was thinking about getting 2 more along with softboxs. The issue I have is the Viviatr is that its bulky. So I was looking at the YN560 but not sure how much light I would get out of them though a soft box. I mostly do head shots using constant florescent lights.

According to speedlights.net, the yn560 has a guide number of 39 and the 285hv has a guide number of 31 (officially). The author's tests reveal 34 and 32, respectively.

In either case, having had both flashes, I'd choose the yn560 over and over. Cheaper. Smaller. Lighter. Faster recycle time. More power levels. PC port (IMO, better than Vivitar's proprietary port, but still sucky compared to 3.5mm miniphone ports).

Thanks

I started out with 2 - 285hv flashes but since I got my YN 560 they have hardly been out of the light bag.

v35skyline wrote in post #14163427
... In either case, having had both flashes, I'd choose the yn560 over and over. Cheaper. Smaller. Lighter. Faster recycle time. More power levels.

... including the missing 1/8 power setting. Also, the head swivels, and there are built-in optical slave modes.

Yes. Which is why I modded mine to add a 3.5 minijack port.