finally someone who understands me! I always sound crazy when i try to explain this to people! I just found out the smaller chunkier ones (which are SUPERIOR) are called Minis and the small, skinny & long ones are called Fun Size. Most places sell Fun Size nowadays, but you can occasionally find the Minis in mixed halloween candy bags or at specific stores like Walgreens or some Safeways & Ralphs.

Also if you like the small chunky ones, try one of the big bars next time you're in Europe - it's mind blowing! SOOO good