iMac crashed - contacted MacJunky at 9 in the evening via the very convenient chat function on the MacJunky webpage.
Immediately got a response and could bring my iMac for repair the following day. HD fixed and data recovered, and ready at the agreed date. My iMac runs smoothly again.
Professional, skilled, customer friendly and a very nice guy. MacJunky is the address to go to for Mac support.