I would like to upgrade my 4+ yr old Pioneer vsx-d509 receiver at some point. I could upgrade now, possibly to Pio 101X, or wait for a year or so if there are any must-have features about to be included to the ~$500 category receivers. One that I can think of is HDMI upconversion. Does anyone know if this is significantly better from component upconversion? Any other cool features in the pipeline that are worth waiting for? Thanks.