Ted, the Vivitar 283 and 285 is a low priced, very powerful, controllable flash that has been in production for at least 30 years. Not TTL but still I think the best flash made.
I'm old enough to remember when 265's were made before 283, and the "oh my gosh 327 inches in a small block". Hell, I remember 6 cylinder Corvettes.
Bob Michaels