I want to pick up a vintage SS integrated

Hi, as a stop gap solution, as well as for enjoyment, I wanna pick up a 70's vintage integrated amp.  I have been looking at the Kenwood KA 5700 as well as the KA 405.  Aside from the specs, which one was the higher end model, do you guys know?

My budget is around $500, and I like VU meters.  Around this range, what else could I be looking at?