How can I get more saturated colors when I render? How can I get more saturated colors when I render? An image comparison is worth about a thousand words.

Take this raw render as an example:


But then when I tweak it in photoshop I  can get this:


See how dull the render is? (looks really bad right on top of the edited one)

What do I have to do to get the render to look more like the edited image?

I have heard all the common knowledge about never using colors that are too saturated or have a pure value in materials or lights, but when I keep my values too low I end up with dull images (as seen above). For reference the two lamps in that image have a saturation of 0.2, and a value of 1. Their strength is 400, and 500 for the green one.

Here is the blend, so you can dissect all my settings.

I have read How to get accurate colors with Filmic Blender, but that question is different. I'm not asking why my renders look dull compared to a non filmic color transform, but rather what should I do to make my render look vibrant "out of the box."

Is there some sweet spot with the Exposure and Gamma controls in the Color Management section that will yield more vibrant colors? Or are renders always expected to need some tweaking?
Or should I simply use more saturated colors in my lights?
Watch your albedos. It doesn't matter if you use pure primaries or highly saturated colours; Filmic will desaturate as things get too intense. High albedo will race those values through the roof quickly, leading to desaturation. As Cegaton wisely said, the old adages are pure rubbish based on a lack of understanding regarding view transforms; feel free to use as heavily saturated colours as you want when designing your looks for textures.
You can't have an object that is highly saturated and highly intense. It is simply impossible. Colour is a byproduct of the ratios of the three lights, which means that as the intensity increases, the room for those ratios become more and more limited. Find the sweet spot keeping your colour within the exposure range.
There is an intimate relationship between the apparent saturation and the contrast. Try to be delicate with contrast adjustments that focus on the saturation you desire. For a fulcrum based contrast tweak around middle grey, divide your render by 0.18, use the power function of the CDL, then multiply by 0.18 on the other side. This will adjust contrast based around the middle grey point as a fulcrum.