Hi Alan
We have just purchased a Lightman so at this moment in time don't have that much experience to make a valued judgment.
We did not trial the Lightman but had it demonstrated to us and we were very impressed by it.
We tested some probes that we thought were faulty and had put to one side to use in part exchange and it passed four showing no fault.
I am sure it will prove to be a very usefull tool for us.