Bob wrote:

have been widely tested against some really
serious, exotic receivers!

If you only tested your tube receiver against *some* receivers then
your claim about outperforming *all* SS receivers would be invalid.
'Absolute' statements will get you in trouble most of the time.

I haven't seen /any/ digital processor
that assists me in actually picking signals out of QRM.

*You* not having seen any doesn't mean there aren't any.

pseudo-selectivity given by digital filters with all their nasty artifacts)

Selectivity is not usually my problem. With close neighbors and a low
wire antenna, it's man made noise that is my problem. Digital does
well with this.

I'm happy for you if you're happy with your digital Rice Box

Yes we have hams here that are also 'Rice Box' prejudiced. Prejudice
for everything produced in Asia is silly these days.