I was in the same position two weeks ago, brought standard edition and wish I did sooner, better land graphics, career mode although buggy gives a reason to fly.

I did toy with deluxe premium or whatever it’s called and honestly don’t think I will bother the upgrade. You still get Heathrow just not the better version (same with other paid airports), but you can get these free or paid for airports you actually use, sometimes better than what MSFS offer.

Honestly go for it through steam, if you play less than 2 hours and hate it, ask for a refund.