I got a change to try the European model (I think it is about the same) XP-EV500.
I must say, you were not wrong. For a current low end player it is quite good! Output is plenty. When listening to loud recordings in a quiet room I hardy have to turn up the volume at all! (PX100) The soundquality isn't amazing but at least doable. Not like others I tried who had either no bass or a V chaped EQ setting build in. (You know, lots of bass and treble and where are the mids?)
My iriver imp-150 sounds better, less muddy and the bass goes deeper.
But this PCDP has some advantaces over the imp that are quite important. Unlike the imp it doesn't have a ton of features. But it does have good batterylife (I got 44 hrs on 2100 mah batteries) and a build in charge circuit. Charged the 2100's in 6 hours.
It's smaller and lighter then the imp-150.
About the defeatable antishock, don't think this one got it. You can choose EASS 1 and 2. With 1 the disc spinnes up 5 sec, slows down 5 sec. Haven't tried 2 yet,well, just for a minute. It seemed like the disc spinnes up for about a minute when you start listening and then acts like EASS 1, 5 sec on, 5 sec off. (about 5 sec. it depends on where on the disc the laser is.)
If you want mp3, features, a remote and the best soundquality on a cheaper current model go for the iriver. If you want a no nonsence PCDP with good batterylife, ability to charge and soundquality isn't the main concern this Aiwa is worth the consideration.