Sorry to deprive you of a new bird, but I reckon you were right first time with this, it is a Downy – structurally, it is a small bird with a dainty little bill (Dainty Downy!), whereas Hairy has a hefty bill (Hefty Hairy!)*. The outer tail feathers are often a good sign, but not it seems invariable; according to Sibley, "Downy usually has dark bars on outer tail feathers, but these are sometimes lacking" (my italics). Sibley also cites the conspicuous tuft of bristles above the base of the bill as a Downy character, and yours has it.
Shucks, I was right! (who was it that said "in ignorance there is bliss") Oh well, not to worry Pelle, at least I had a 'new bird' for awhile! ☺
Thanks Resin, that's what I use... Sibley's. Still hard to tell those two apart, (the Hairy & the Downy), I think the Hairy is a bit larger as an adult... when I see a big Downy then I'll narrow him down to a Hairy!