1.
the components seem nice. i have been running an Onkyo for the last 5 or so years without a single issue, but always great sound. when we upgrade in the near future, that Onkyo will go to our master bedroom, and it will be replaced by another Onkyo.
i don't care for Sony, but i would rather that unit over their two lower models from that one. i have not heard of one yet in any range that still does not have the occasional firmware issue. they always have updates, so i don't loose sleep over those things. buy it from a box store with an extended warranty and go with it.
2.
all of the A/V cables and wires in mine and my parent's houses are from monoprice.com. i am also running a pair of their in-ceiling speakers and LCD mount in our master bedroom. all of their products have far surpassed my expectations...and that is why i keep giving them money.
3.
no idea. seems like it would though.