Here's the best advice ... don;t think any one solution will work everywhere and don;t think someone else's solution will work best for you.
Get something squishy, like those foam tennis balls, and cut them in half.
Then get something roller-blocky.
Then get some hard wood blocks.
Then get something pointy.
Try each under only "1" component (I suggest starting with the source component) and see what sounds best. Then, leave that there and try each under another component and leave the best one there. etc.
Then when you think you have it, go back and try each under that first source component again and see if your results are different. I bet they will be. It's all about tuning with footers.