The difference is akin to the difference between baby spinach and regular spinach -- smaller, more tender leaves, and more delicate flavor. I like both baby kale and regular kale... but find baby kale easier to prepare.
Starting Weight: 260 lbs. (November 2010)
Quasi-Maintenance: 165 lbs. (June 2011)
Goal Weight: 150 lbs. (reached December 8, 2011)
Size 22W to Size 4
Currently maintaining within 5 lbs. (+ or -) of goal. I weigh daily, but also use a tape measure and the fit of my clothes to guage how well I'm doing.