Hmmmm.... It's hard to choose, but I'll say チョコレート bars, because they come in different flavors, not just plain old chocolate. Plus, it comes in dark, milk, and white varieties. :D
I would definitely choose the チョコレート Bar vs the チョコレート Ice Cream . It's true that the チョコレート Ice Cream May Be Yummy - but also あなた might have to eat it a bit もっと見る quicker before it melts and be careful that あなた don't stain yourself . Whereas for the チョコレート Bar you're able to take your time while enjoying your snack !