Hi Minigill,
I've just bought the SC-LX71 (upgraded from my old AX5i), and I've been very impressed so far. I'm using it with a BDP-LX71 Blu-ray. My old AX5i was not so good with music (though brilliant with DVD sound), but the SC-LX71 is! It still doesn't compete with a good hi-fi amp (my old circa £500 NAD 319 was better in stereo, with bass speed and definition being noticeably superior in particular), but it's good enough to get me playing my old CDs again using its pure direct mode. Its performance with HD sound, though, is very, very good indeed. That could, of course, be down to the audio feed its getting from Blu-ray. Overall, I'm very happy with it.