Hmm. One of the things I enjoy about the visualizations is that your metrics tend to answer useful questions succinctly (e.g. Where is the sweet spot for ppi/price for a laptop with a screen size of less than X and weight less than Y?).
Why do people buy desktops these days? Expandability?
Passmark # from processor, max memory capacity, and chipset would be interesting to have.
Parent link has the full selection: http://www.productchart.com/
(Note: used the cell phone chart to decide on my current model)