Love this! I published a similar one last month:

https://buttondown.email/stack

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A couple notes on where I differ/concur from OP:

1. ahrefs is absolutely worth its price in gold.

2. IMHO intercom is overpriced relative to competitors depending on how you use it, with the caveat that I hate in-app messaging widgets and consider them a blight on the modern web. (HelpScout is my preferred app.)

3. I deeply miss my Free AWS Credits Era.