What are the differences between the 5 different STEPCRAFT Desktop CNC models?

The STEPCRAFT 210 is based on a version 1 of the STEPCRAFT CNC product line.  It will have a very small work area as well as a max speed of around 30mm/sec and a lower Z height (around 3″).  The STEPCRAFT-2/300 has the same specs in terms of speed and functionality as the 420, 600 and 840, but the Z height is slightly shorter (around 4″) as compared to the 5.5″ of the other machines.  The STEPCRAFT-2/420, STEPCRAFT-2/600 and STEPCRAFT-2/840 all have the same basic specs with the exception of the total work area size in the X and Y dimensions.   The following chart will help illustrate the differences between the different size STEPCRAFT desktop CNC machines.