Looking nice, interesting renders too - thanks for posting the setup
Out of interest, have you tried messing around with the "Object Mult" and "Color Bleed" values of the Light Tracer in 3dsmax?
If you set both of those values to around 2.0 (or higher if you're feeling adventurous!) then set the "Bounces" value to 3, it may take a bit longer to render, but you get really interesting bounced light effects with the saturation increasing where objects intersect. You can get some nice and sometimes more realistic renders this way.