I had the 810 version of the VCL4500. Seemed like a good idea, but it's just not bright enough for me. I like exposures with the lens stopped down a few stops and 10 to 15 seconds. The VCL couldn't do it, even on 8x10s or 11x14s from a 5x7. Also, they are expensive. I use an Aristo V54 coldlight tube with filters, both Ilford MG type and lighting gels. This is easy, fast, and bright. For a timer, I'm using the Metrolux II -- a must with coldlight.

Sorry I don't know the Ilford MG 500.