If you are looking for good-tasting, nutritious protein/fitness bars I highly recommend any of the assorted PureFit nutrition bars. They are high protein, all-natural, 230 to 240 calories and come in Peanut Butter Crunch, Almond Crunch and Chocolate Brownie.
I like all three and the Chocolate Brownie is an excellent substitute for the high-calorie candy bars busy people tend to binge on when the afternoon snack attack hits.
The company offers a $5 sample kit that contains one bar of each flavor. Give them a try.