Topic: Help! Three different but same games. Which one?

I want to get one of:

Adventure Island (NES)
New Adventure Island (TG-16)
Wonder Boy (SMS)

...but I can't decide. From my understanding, all three are basically the same game, with the same scores, but with different graphics and music. I love the graphics of NAI, but it's 100 points more. The first AI apparently has an unlimited continue feature, and the music is amazing. WB has nice, crisp, bright graphics, but the music annoys.

Can anyone recommend one of the titles?

Oh yes, and does NAI have the level continue feature, or perhaps progress saving?

New Adventure Island has 16(32?)-Bit graphics.

If you want nostalgia, I recommend Adventure Island.

Not too sure about Wonder Boy...

Side note: NAI feels the same, but has different level designs and two extra weapons.

Does NAI have unlimited level continues or a save feature? I'm really leaning towards it.