angelo Campanella writes:

Alternatively, which FS today is worthwhile?

FSX is the current version, but FS 2004 (also known as FS9) is more performant
and possibly a better choice if you want to practice things like IFR, mainly
because more add-ons are available, and with the add-ons you can come far
closer to real life in your simulation (especially with respect to IFR).