I present to you - the biggest issues for lee730:
For me, however:
Battery life: Non-issue. I use mine at a desk, hooked up to the $6 charger I bought from Ibasso. Some use their DX100 for trans-continental flights where 7-9 hours of playback is not enough. I don't.
Wifi: I think mine is broken again. I really don't care as I never use that feature. Some bought the DX100 with plans to use it for streaming audio. Boy, were they in for a nasty surprise! Personally, I only use it for flac playback.
Quirky UI? Took me a whole of 25 seconds to find my way around the UI and I've been using it ever since. Heaps better than other TOTL daps like the HM-801, Colorfly C4 etc. Extremely slow and ugly compared to TOTL Android phones. Pretty damn fine for a dap.
See? This is why the DX100 is an AWESOME dap to me and a useless, overpriced piece of junk for others. When reading reviews, be sure to consider how you will actually be using any given device and read the review in that perspective. Example: Reviews of the LCD2 v2 tells me they might be right up my alley. Trying them on at a local meet confirmed this. Brilliant headphones. Expensive? Sure, but they sound the part. Yet to me, they are worthless as I listen almost exclusively at the office, rendering open headphones rather useless - not to mention the fact that they get warm and heavy over time. If you need a DAP for running or for streaming Pandora, the DX100 will be a damn poor choice. Need a fine music source at your desk, independent from your computer? DX100 is what you need. If we look at the DX50 as an iPod-killer, things aren't looking too good. If we look at it as a baby DX100 at 1/3 the price, I think Ibasso absolutely nailed it, judging by pictures and specs.
Horses for courses, gentlmen.