Literally speaking, I guess I'd have to say my "favorite" would be 2.1 analog. But that's if we're talking "Platonic ideals", rather than reality.
As far as 2.0 vs 2.1 is concerned, I have an inherited pair of "Advent" Legacy II's, with which I can happily live without a subwoofer. (Especially since I live in an apartment with a decent-sized but by no means "large" living room (sonically speaking, as it is, the Legacy IIs are actually a bit big for the size and shape of the room). And while I
do hate my upstairs neighbors for the amount of non-musical noise
they make, I have nothing against my
downstairs neighbors who would be the ones to suffer if
I cranked up a sub.

) For that matter, even my second/ary pair of much smaller/weaker Cambers aren't at all bad, given that I'm really not a "bass-head" where music's concerned and am
totally uninterested in "serious" home theater audio. (I just don't watch enough movies to give it a second thought, much less worry about it.)
And as far as analog vs digital, it just isn't worth the expense first and foremost, or even the effort, to me to put together or maintain the kind of system that makes it worthwhile. As far as I'm concerned, except at the very highest end, digital playback blows analog completely out of the water (I am
not after all one of the .0001% of humans with the hearing of a dolphin...) Indeed, I for one was absolutely delighted when, first, decent digital playback got cheap enough to be truly "affordable" and then continued to advance to the point where you actually kind of have to make somewhat of an effort to buy something that sounds appreciably crappy...
Not to mention that cost aside, it's been a
really long time since I had to think about how heavily I was walking by my stereo, and I really have no great interest in starting all that and the related annoyances back up again...

like having to remember to clean, and replace, needles, frequently re-balance tonearms, worry about how I"m storing my LPs, etc. Not to mention that I'd hate to give up being able to transfer music freely between playback devices, or being able to peruse my music collection without having to literally flip through box after box of vinyl (or worry about keeping it in alphabetical order so I can actually find what I'm looking for. Etc, etc,
etc (and the longer I think back on the pre-digital era, the longer the list of "et ceteras" seems to get...

)