I just picked up some PowerBar Protein Plus High Protein Bar, 290 calories with 24g Protein, 38 g Carbs, 2 for $3 on sale at the local grocery store.
Every 2 weeks, i've been rotating Protein Bars... First were Zone bars at 16g Protein, then Balance bars 15g, then Pria bars 5 g Protein. Purchasing them at Walmart mostly and once in a while at Whole Foods Market.