RG,
These are the KIS models listed on the JB web site under DSLR Cameras - Canon. 5 of the 23 cameras listed. They are all advertised with Canon Warranty and no mention of anything different from the other models shown, except apparently the price.
Canon 1100DKISB 12.2MP DSLR w/18-55IS
Canon 600DKIS 18MP DSLR w/18-55IS
Canon 1100DTKISB 12.2MP "Twin Is Lens Kit"
Canon 60DKIS 18MP DSLR w/18-55IS
Canon 650dtkis DSLR 'twin 'is' Kit'
I wonder why merchants don't state what the differnce is? If there is no difference, why are they listed as KIS? What are they trying to hide? Are they trying to fool buyers?

I'm not commenting on the quality of the product, just asking why the difference?
Clear skies
Rod
