Don't decide because you 'like the look of'. Decide because of which fits you best and suits your purpose.

I preferred the straight blade on my target 77's. The curved blades, especially the extra set back ones, tend to have quite a curve to them and that limits the trigger finger to sitting in the middle of that curve. If you use a straight blade then it gives more options re vertical position for the trigger finger contact. You can also use the trigger finger on the straight blades very low if that position suits, and that gives the effect of a lighter release ( longer levers ).