Just received my DER EE DE-5000 in the mail, needless to say I am impressed and happy! Very accurate and consistent readings relative to my cal'ed 3458A. It has successfully determined several capacitors to be faulty while taking readings in circuit. I used ESR primarily to determine wether or not a cap needs to be replaced.
Only small complaints i have are as follows:
1. The unit is pretty chunky and unattractive. Not that aesthetics matter that much... and honestly the DE-5000 is overbuilt if anything, which should lend to its long-term durability.
2. The LCD contrast is not that great. When looking at the screen top down the activated segments appear "dim". Best contrast is achieved when unit is sitting on its stand and you are looking at it from a 45 deg angle. The unit's backlight in conjunction with a dimly lit room further helps contrast.
3. The Kelvin alligator clip test leads could have used some nicer clips. The alligator clips are the same cheapies you can buy for pennies on the dollar from China. I would recommend DIY leads that interface to the adapter box. See robrenz's youtube channel for an AMAZING example! I will be making my own shortly.
BTW, my units PCB revision is version 8.
Overall 9.5/10! Buy this