There is a new v2 version of the DSP controller. LightObject has a very limited amount (2 or less) of 1.x controllers that he is selling at half price. That sounds like it is about $225.
I don't know about upgradeability...I have asked that question and others and will post the answer when I hear. I don't know too many details I am just passing the info.
EDIT: Not upgradable.
The older version is really stable and quite good. There are two major additions that make v2 worth while:
1. Built-in support for cylindrical engraving.
2. Software has stand-along vector designer and bitmap converter/ditherer (but don't know how good the dither is until I try it).
To get one you need to contact Marco Wong at
sales@lightobject.com. Tell him you heard about the deal on buildlog.net. It is not listed on the web site.
http://www.lightobject.com/Commerical-D ... -P321.aspx .
- For reference only: I don't know what version this is.