Must be a time-space continuum warp bubble then, cos I posted mine more’n an hour before…
Re the Second Edition:
“30 keys, ranging from G below middle C to the second C above middle C. Fully chromatic.
The 2nd edition goes 3 notes (Bb, B, C) higher than the 1st edition, but misses the double notes.”
It’s that “misses the double notes” that alarms and intrigues. Which notes have been chopped? By keeping to 29 keys (the 30th is just an air button) but sacrificing “the double notes” (whatever they are) then the keyboard layout can’t be identical to a standard English.
That could definitely cause problems when the time comes to upgrade.
I upgraded to a Lachenal fairly soon after buying the Jackie (1st edition) because I became quickly irritated by the lack of B2. But there are many many tunes that never go up to the second B. I just got hung up on that missing note I think.
As for playing the Jackie, as I said, it’s loud. Steel reeds for one thing. It’s at least double the volume of my brass-reeded Lachenal. It’d stand up well in a session (unless there’s a piano accordion player in the building!).
The action is fast, certainly fast enough for any beginner wishing to check out the 'tina.
It’s heavy, much heavier than a Lachenal, and it’s big too, a lot bigger’n a Lachenal. But the buttons are, as the makers correctly state, laid out exactly as the originals, which makes upgrading a doddle.
Bellows are waxed paper, which tends to creak and groan a lot from brand new until they get used to being used. With care though, they’ll last a long time (though possibly not as long as the original leather/card bellows).
It’s possible to add a home-made neckstrap just by removing the knurled thumbstrap screws (they’ve a convenient sharp point on), pushing the screw through the neckstrap material, and replacing the screws. They’re plenty strong enough to bear the weight of the box. With the weight of the box, I’d definitely recommend a neck-strap.
They don’t do the trade-in deal here in the UK 
I said in my previous post that the Jackie makes for a perfect beginner’s instrument apart from the lack of the B2 on the right-hand end. But that’s clearly for the “first edition” model. I don’t think I could say the same for the second edition though, because those missing “double notes” could definitely cause problems for a beginner upgrading to a modern EC or an original Lachenal/Wheatstone EC.
Hope this helps!