I bought the Steam version. For the only reason that I am usually working on Mac and all my game purchases have been done in Steam.
So yes, I am currently running FS2020 on an iMac 27" 2018 (with an i7, 32GB RAM and an “AMD Pro 580” with 8 GB VRAM). Windows 10 (and of course FS2020) is installed on an affordable, external 1 TB SSD. Runs pretty decent in “Full HD” resolution and with “High” settings. Yes, I get occasional stutters, and flying over New York reduces the framerate - but I am coming from “1 FPS flight sims” back in the days of the C64 - so ANYTHING above 20 FPS pleases me nowadays (But most of the time my estimation is that I get 30+ FPS, specifically over “rural areas” or “up in the sky” - absolutely flyable and enjoyable!).
But back to the topic: as others have mentioned Steam simply downloaded some installer, which then started the actual installation process (specifically the download of 90+ GB - which even with my fast internet connection took half a day, or even more). From this point onwards the “installation experience” and everything else should be pretty much the same like when purchasing from the Microsoft Store.
But now the game is registered together with all my other games, so there you have it. I don’t use any Steam-specific funtionality (such as chat, teaming up with others or even voice chat, or whatever there is…).
Then I bought the “Premium Deluxe” version, but simply because 1) I had my birthday and 2) I wanted to “properly fund this ongoing project”. I am a flight sim noob (coming from Falcon 3.0 - if you know what I mean ;)) and for me it wasn’t necessarily about those extra airplanes. In fact, I am currently mostly flying IFR with the A320neo (which apparently works best when it comes to autopilot - the other two airlines: not so much - but personally I havent’ tried them just yet).
Oh, and one should also mention the 3rd option: the “Xbox game pass” (or whatever it is called): the “Basic” version of FS2020 is included there, and there is apparently some discount currently, where you can try it for 1 EUR per months (otherwise 4 or 5 EUR only). You can’t get it much cheaper
And regardless of what you read here on the forum: for me the FS2020 is absolutely fantastic and meets and surpasses all my expectations! Especially visually.
Yes, there are some glitches, some textures are “not quite there yet”, the flight models may need some tweaking, flight sytems are sometimes only partially implemented or not behaving as expected (from a profesional point of view), there are a few “crashes”. But given the sheer size of this project for me the simulation runs very stable already (the crashes only happened for me after several hours of operation - so if you want to be sure before a longer flight: simply reboot the FS2020. Yes, I know, doesn’t sound very promising, but in the worst case you can “slew” (position) your airplane to the last known location and resume your flight.
I am writing this while flying from Frankfurt to Moscow (So yes, in my case browsing this forum while flying - running a browser besides FS2020 - is absolutely no problem, performance wise - except that I sometimes get a chilling “Overspeed! Overspeed!” warning in the background Yes, the autopilot is not perfect yet (especially after having been “hit” by a gust of wind, my suspicion…)