Both jobs seem completely reasonable. Media Buying seems a little more interesting but I have a bias over how SEO has ruined search engines lol

The question will come down to what's important to you.

Pay? Stability? Benefits? Work culture? Are they remote or in-office? Etc.

Yes! I ended up choosing the one with the best hours + opportunity for development and I don't regret it. Good luck and congrats!

What's your long term goal? SEO and media buying may converge, at some point, at the top, but in the short to mid term, they take divergent paths.

Less commute is good, but companies move, especially "Agencies", and people move as well. So, keep that in mind.

I got a choice of two promotions and it was around Christmas so it was pretty sweet!

Congratulations. I`d be more leaning toward the dog friendly one, but that is just me.

It's nice to have choices. So I've heard, anyway. Good luck.

Best pay/discomforts ratio

It’s up to you.

Less commute the best option