My two favourites are the Protein Diet Bar flavour Toasted Coconut from Optimum Nutrition and Complete Pro42Bar peanut butter chocolate chip. Both bars are fairly low in carbs.
1. Solid Protein bars (they're awesome, have the least amount of sugar)
2. Pure protein... second best but taste just as good as the solid protein bars (both of which I crave lol)
3. Premier 8 bars - my favorite is the Lemon, its AWESOME!
4. Higher fat but also good bar is Met-Rx, bavarian mint, peanut butter... only if you're looking to have 8 or 9 grams of fat, its worth it!
They have the cheapest protein bars and shakes you'll find on the internet. Plus shipping is fast and I've NEVER had a problem, plus they have EVERYTHING that you could really need.. From pro-tan, calipers, protein, whatever....
they are smaller than most other bars. I can eat a whole one at a time, while i have to split the bigger ones. Might be an added feature for some people.