I use Superclean, it removed the chrome from the chromed frets in the Monogram Red Baron hot rod kit in less than 2 minutes.  Thicker paint on plastic or metal figures takes a little longer, up to 20 for a soaking in a jar filled with the liquid.

I am intrigued by the notion of using bleach, or using Coke, and will have to try those.  Coke'll certainly remove the enamel from your teeth over time, so I'm not surprised that it could strip paint.

The only issue with bleach that I can think of, is that of getting it on my clothes.  I don't wear "good"  clothes as such, to work at my bench, it's my casual gear, but I'd still hate to get bleach flecks on them.  Superclean hasn't been an issue.

Also, bleach does have a bit of a scent, not as bad or caustic as that from the lye in oven cleaner, but probably want to make sure you've got good ventilation.

I did notice another effect with Superclean, a good side effect--it's a degreaser, and the parts that I soaked in it came out perfectly clean of all oils or mold release compounds.  I had never felt the plastic surface feel like that, and now, instead of using dish soap in warm water to clean sprues, I use a couple drops of SC.