hi kids!
i had an AX10i - mega amp!
i upgraded to the sc-lx81 for the hi def stuff - its actually more of a move across and not down - the sound is pretty similar so i wouldnt say youre moving down the product range!
cant help u with an idea of price tho - but £500-700 seems reasonable
i, too, thought about getting the susano, but for £3500 more it would need to sound a hell of a lot better! ie 2.5x!
my ax10i at the end had a duff rear surround channel - only one worked so it forced me to go back to 5.1 as i had been using 7.1 since about 2003 but it wasnt really a great loss to be honest - 5.1 is plenty as the discs using any more than that are minimal and the back speakers just got in the way!
it also meant i could bi-amp the fronts
i gave my ax10i to my sister - she was very pleased!

boxing it up was fun!
i still had all the packaging so lots of rolled up newspaper and other bits that i was giving her too and even found loads of shredded paper in the paper recycling bin outside to shove into all the spaces.
her boyfriend said he'd never seen such a good packing job - its definitely is worth taking the time and it should be ok with a decent courier as its actually too heavy to chuck about with any force!
was sad when it left.......