I prefer the tamas with the always-on screen as opposed to the ones that go dark after some time: color tamas, Digimon 20th and X, and the GigaPets Pixie all have screens that turn off. I’ve gotten used to it on the color tamas, but on the LCD screens it looks like the battery went out. I like being able to see my character bouncing around on the screen.
I like all the vintage Tamagotchi and Tamagotchi Connection the best. Out of those it is difficult to pick just one as my most favorite.
Since Maskutchi is my fav character I will pick the P1.