It's hard to beat this.
I can only write one review, but I've come to them for three repairs: washing machine, dryer, and dishwasher. In all three cases they found loose connections or adjusted tension screws (i.e. no new parts) - on the Miele washer dryer their service was cheaper, faster, and better than service directly from Miele. Miele helped me replace fuses, 4MD rewired around the fuses (North America we don't need the fuses - circuit breakers cover that off.)
Steve called when the office said he would call. He came when he said he would come and even stayed for a few minutes to talk me through how I could switch the door on my dryer to open from the other side.
Every visit took less than an hour. They came within 2 days (compare to Miele's offer of a week later) and on the first Miele job the complete cost was $70 dollars LESS than it would have cost for Miele to walk in the door. I didn't bother to comparison shop after that.
They made the mark and executed with courtesy and speed.
I've scanned receipts from Miele and 4MD for the same fusebox job - I'm not sure why Homestar isn't letting me upload any more. I call 4MD first and I recommend them.