If it is a budget or monetary reason for buying a "student" or beginner model... then either of those first two you cited will be fine.
But... if you really intend to play... skip the trainer model and get a little better grade.
Either of those you cited will play fine and be wonderful instruments, I'm not saying that they are not good.
What I am saying is that buying a $140 instrument and then wanting to upgrade will cost you $140 more than just buying a nicer instrument straightaway.
Also... Chromatic sounds cool, and modern, and sexy, and all that...
...but honestly, you'd probably learn more and potentially be more satisfied with a straight diatonic or just with a 6+ fret on diatonic. Merely my own personal opinion of course. But I'll make a little confession... I just built myself a new dulcimer, and this time I went with straight diatonic and "Just Intonation" fret pattern... I could not be happier and it's the best thing I ever did for my playing and enjoyment. And that, from a guy that can have any style or fret pattern he wants.
I'm not much of a player. But I have been studying on noter methods that can really grab a wide variety of notes. From a personal outlook, I really do not need or want the extra frets. Now, 6 months ago I had an entirely different outlook. But luckily I've wisened up since then
Ol' Ken there is really onto something with his old school ways. And that something is very good.
Whatever path you choose, I sincerely wish you all the best.