I recently lost my rb'ed Clip Zip (and Sony armature IEMs, and 64GB SD card ). I had meant to compare it to my trusty old A729 but hadn't gotten around to it. Using the A729 now with the included ("hi-fi") headphones and it sounds great (better than I remember the Clip to sound), although they don't block out much sound.
I'm now wondering if I should bother getting another Zip, although I do like the expandable memory and FM radio. Has anyone ever compared these units with the same headphones? Interested in unamped sound quality only here, as I am aware of the features of each.