The following is a detailed comparison between the iRex iLiad and the Sony Reade(PRS-505). FEATURES SONY EREADER – PRS 505 iRex iLiad Display 6 Inch “electronic paper” display SVGA 800×600 Approx.170 Pixels Per Inch 8-level gray scale Uses E Ink® – a significant improvement over CRT and LCD technology. The result is a reading experience [...]