Having just purchased the product as part of my BigBox order I have to say I am disappointed. Since starting 3D printing over two years ago, I have used Slic3r, Cura and Kiss, the former two through Repetier Host, and find that Cura gives consistent results for quick prints and Slic3r and Kiss have excellent configuration capabilities while Repetier has excellent model manipulation tools and excellent graphics. Simplify 3D is a mix of all three but not an adequate one, having less than perfect graphics in the Windows version and somewhat clumsy in its user interface, which is inadequately described. There are some features that are good, such as printer configuration, the multi-tool settings and the on-line diagnostics pages.The major missing items are an inbuilt gcode editor/viewer and the lack of a descriptive manual, the online tutorials are not good enough and lack information; the former means that it misses out on gcode hackability unless a third-party editor is used and the last two hit new users. OK, Slic3r and Cura are not perfect but within Repetier are very usable and do contain descriptive dialogue. For new users, this may not be the best product and, for around £100, one would expect a top product but this does not appear to meet that requirement. I may be being hard and will persevere with the product's learning curve until I receive my BigBox and will do comparisons when it is complete but getting my money back will, I suspect, be difficult. I wonder what other users think who have had time use it?