Thanks Tom for the informative and easy to follow feature-set table!
Well - It's quite sad to see that H/K has in many ways downgraded the line-up once again. Now the pwr rating is based on 2 speakers driven (likely to get in-line w/competitions ratings) and is 1.5 lbs less in weight. It seems that not only did they downgrade the amp section but they also lost the I/R in/outs as well as the 7.1 input. No video up scaling high at this $ point is still quite useful. Wonder what processor is used and what the I think with this new "50 series" line-up H/K is going to lose a lot of die hard H/K fans looking to upgrade this year - I know they lost me. I was hoping for an upgraded 3600 to replace my 247, now I will certainly be looking elsewhere. Network features is not enough to sway me.
H/K says: "Introducing the harman kardon A/V receiver that does it all." they should add: except what we did last year.
The added features of HDMI 1.4a and DPL IIz are of little interest.
The only feature I consider even mildly interesting is the network capability but as I did into that it seems it's only for Internet Radio - again of little interest and offered on last years international series.
It seems that even Infinity is dropping the better product line. Harman is of real disappointment of late (for the products that mere mortals can afford).
Sorry to rant about Harman I was really hoping for an offering like the International Series 460 or 660.
Now off to study the DM Holdings offerings against Onkyo/Integra................