Those that grabbed Milwaukee M12 Fuel over Hercules impact driver. Why?

I’m looking to get my first small cordless impact and got it down to these two. Milwaukee seems smaller and that’s bonus as my next tinker is an intake manifold swap.

Curious what reasons for whoever had to make that choice.

Milwaukee is on sale and the sub-compact profile is the biggest sell. Don’t even need the power. But I also recognize I’ll need to go to the Hercules platform soon and will end up getting the batteries and charger down the line