I've had my BDP-105D since May and use it exclusively in a stereo setup with no display. The iOS apps are great - easy to use. The sound quality via XLR into my pre/power combo is superb and it plays everything. I mostly use lossless music on a NAS drive.
I don't think there is a better player that's cheaper - or a cheaper player that is better.
I did use it for a while directly plugged into my power amp (using the OPPO as a pre-amp) but since I also use a record player that was short lived. (no analogue inputs)
I would've liked USB iPhone streaming (really don't need anymore as my whole library is on network storage) - maybe the next model will??
I would like an input selector on the front.
Can't think of much else.
(I also sometimes push music to the OPPO from Media Center)