Well, I just did a side by side taste test (yes, I know it's past 2 AM, but I'm a chocoholic), and
here's what I found. I compared the 60% bittersweet bar to the 60% bittersweet chips, and there is quite a difference. The bar chocolate was superior all around. It had more taste, more depth, and was much creamier (which actually makes sense, since chips should be more firm and slower to melt or they wouldn't be chips). However, I found the chips to be quite flat tasting compared to the bar chocolate, plus they had a slightly waxy texture. I've always loved them when stirred into a chocolate chip cookie batter, because they maintain their shape, but still have a little meltiness to them, and the baking seems to enhance their taste and texture. But... I'm not going to use them melted into a batter, unless the recipe specifically indicates to use chips for whatever reason, and will stick with them for what they're intended to be used for - chips.
So, although the ingredients are exactly the same and in the same order for both the bar chocolate and the chips, there's obviously a difference in how they're produced or some other unknown factor. Why don't some of you taste them for yourselves, side by side? I'd be curious to hear your results. I still have to do the semi-sweet bar chocolate vs. semi-sweet chips test, but I assume my preference will be for the bar chocolate.