Here is a pic of the two.
The extreme does what my snap on box does and thats hold my tools.
The extreme drawer pullers are awesome and I like them better than any tool box I have ever owned.
Anyone who buys an extreme will be happy they bought it. If only I knew about this years and years ago I would have saved thousands and I do mean serious thousands.
I have had my extreme for some time and she still feels new. I wax it after I use it just as I do all my boxes.
I hope this helps out some any questions just ask. Please take my word for it when I say the only difference from the extreme and the snap on box (to me) is the name plate thats on the box, how they open drawer placement, latches and drawer pullers... I love my KRL777 and the extreme all the same. They hold my tools under lock and key very well and both are heavy.
I am selling my 56" extreme to make room for a 72" extreme. I need a work surface.
Will get more pics out soon as I can.