I have a Uni-T ut671 E, which I like kind of, however I'm not happy with the software, I bought it as I wanted a data logger multimeter, the software is crap, it won't work with windows 7, when I install it , it states ports 1,2,3,4, yet install the software and I get ports 7,8,9,10, I don't even have these on the computer which has 1,2,3,4 so I emailed Uni- T, asking them for the fix ,or proper software, been 2 months not a dickie from them, customer service from Uni-T is crap, so ut61e is going on e-bay, to be replaced with a Gosson Metrowatt.
The one thing I really hate is bad customer service.