A year or so ago we called Amin to come and have a look at our fridge, which was not keeping food cool. He investigated the problem and recommended the simplest fix that could possibly work : just let the fridge thaw out for a couple of days and see if that fixes that problem. He didn't try to talk us into some unnecessary repair. He told us that this symptom is not uncommon and could be caused by many things, but we should try the simplest and cheapest thing first. I write and maintain complex medical imaging software systems for a living - Amin's recommendation is exactly the philosophy that I follow in my day to day professional life. As it turned out our fridge had a failed circuit board that had to be replaced, but I appreciated Amin's considerate and knowledgeable approach to investigating the problem.
Just recently our dryer started making noise, and my wife called Amin to come and have a look. Here the problem was much simpler to diagnose - a faulty roller. He came in, found the problem, explained to us his options for sourcing a replacement roller, and returned a couple of days later (as predicted) to fix the dryer. Again he was knowledgeable, trustworthy, kept us in the loop, did what he would do when he said it would be done, and charged what he told us it would cost. I don't see you can ask for anything more.
Full marks for Amin! I hope we never have to call him again, but it is re-assuring to know if we need something fixed that he is available.