THis is a very complete unit, but it would really benefit for a Dummies guide to cable testing, with examples of how to set the tester, and what the results show.
Maybe a video would help, showing a couple of examples of what a good cable looks like, what does a noisy cable show, and how a dead cable show (maybe XLR and 1/4's)
Apart from the comprehensive 'how to' the unit seems fine and is a really good asset to have on any band that has gone through bad cables in the past.
The price is still cheaper than the competition, with the same number of functions(or more if I remember correctly).