What is the best practice to create MSI with some other child MSI as prerequisite?

Currently we are using Inno Setup as a bootstrapper to install the MSI prerequisites. It makes bit complex to maintain the setup. I found the Burn tool which may help us to resolve this issue by having a single setup t开发者_JAVA技巧o install whatever we need. I could not find either documentation or sample for this tool. Is anyone have idea about this? Or is there an alternative solutio?

I am looking for the alternative solution for the actions that we do with the ISS bootstrapper now:

1. Extract the files (Main setup, Prerequisite setup)
2. Need to ensure prerequisites status and install on demand.
3. Start main install.

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The Burn tool is still a bit raw to be used in production. Many people in the WiX community recommend dotNetInstaller.