Alex Duetto or Bezzera Strega?
IMO, it should start with your coffee and taste bud preference.
Here some analogies.
For guitars, which is better a Les Paul or Taylor? Jimi Hendrix or Eric Clapton.
If I'm for rock roll Jimi Hendrix way, of course the Les Paul, but if I more Claptonist then I'll go for the Taylor.
For race cars, which is better the Bugatti Veyron or Ford Fiesta WRC?
If I'm chasing the straight-line top speed above all then Bugatti or other "supercar" are my choice.
On the other hand if I'm racing in the dirt track with very few straight line then Ford Fiesta WRC is the choice.
Back to coffee what is higher in the priority? Is it the clarity or the complexity?
If my taste preference is the same with Jim Schulman then my priority list will include Strega.
Is Jim Schulman is more Eric Clapton or Jimi Hendrix, is up to you.
There will never be "absolute" right or wrong.

To summaries, I believe that the grinder is the music instrument, the espresso machine is the amplifier the coffee blend is the score notes. All have to play in-sync in harmony.
my sole obsession : "to make espresso that everybody loves" NOT "to make everybody loves my espresso"