Solved Choosing an email service

Hi, everyone!
Right now, I have a whole bunch of random email addresses with random usernames for different things, like a Microsoft account for my Windows 10 laptop and Xbox One, and a Gmail account for my Samsung Galaxy S6 and its Google services. I want to make a legit email account that I will be accessing for emailing colleagues, emailing support, and getting my "newsletters" on. So, my question is which email provider should I pick to be my primary email? Gmail or Outlook? Whichever one I get, I'll be migrating the stuff over from the old account to the new account, like if I pick Outlook, I'll sign into my laptop with my new Outlook account instead of my old one, and vice verse with my Samsung phone. So I guess that's another thing to take into account, how easy it'd be to migrate from one email to the other.

It looks to me as if I can actually create a Microsoft account without having to use @outlook.com, but rather just use an existing email address such as a Gmail address that I would create. I want to do that, but I have to then wonder if I can connect my Xbox and Windows 10 laptop to the new Microsoft account and have everything transfer over fine, and then if it'd work at all since it's not a full Outlook email address. Could anyone do some research for me?

I contacted Microsoft about it. Here's how it went:
Me: I want to create a new Microsoft account using my Gmail address, and then I want to be able to migrate my laptop and Xbox over from the old account to the new account. So if I make a Microsoft account using my Gmail address, will I be able to use it with my Xbox and laptop, and will I be able to migrate everything over?
Her: Nick, let us isolate your issue now. The best option that we can do for that one is to change your alias instead of creating a new one because we do not have a tool to transfer licenses and all the information from the old account to the new account.
So what I'm thinking is I keep my Microsoft account for use with my Xbox, and then I create a Gmail account to use for everything else. I'll probably keep my laptop connected to my Microsoft account, just because I get Cortana and stuff like that. How does this sound?

Any responses?