
A lot of people may disagree with me but the HE-5LE are different phones than HE-5 and in no way better. If one is into aggressive, edgy and more transparent and airy sound signature, HE-5 are winners (as it is in my case). I've said this many times but HE-5 (after properly amped HE-6) are the best Hifiman I've heard to date. When I got my HE-5LE, it was no brainer that I wanted to return them, having had HE-5 for a while.
I disagree, the HE-500 (after properly amped HE-6) are the best Hifiman I've heard to date. 
However, with the right amp (EF5, ZDT) I still preferred the HE-5 over my RS-1 which I sold, and I still have the HE-5 to this day. In comparison, my HE-5 LE are smoother and more laid back than the HE-5, with better body, vocals and imaging. I found the HE-5 LE to sound more refined and intimate, albeit a little less airy and transparent than the original. But that was fixed by removing the screen dampening, or upgrading the cable to the HE-5 cable. With those mods I found the HE-5 LE midrange and treble to sound just like my old K1000, but the K1000 bass couldn't match that of the HE-5 LE which was deeper and tighter.
Once I had the HE-5 LE with HE-5 cable I pretty much stopped using the original HE-5. Now that I have the HE-500 with HE-6 cable I pretty much stopped using the HE-5 LE. Out of the SR-71b balanced or ZDT amp with the HE-6 cable the HE-500 really shine. The HE-500 bring back the transparent and airy signature of the original HE-5 but with a more refined and smooth signature; all the while retaining the better imaging of the HE-6. The balanced drive of the ZDT or SR-71b brings about even more improvements.
Edited by HeadphoneAddict - 8/28/11 at 9:33pm












