Good service in my experience
I give Apple good marks for service in Switzerland and England.
1. I misused a USB port on my PowerBook in the last month of its guarantee. No details, but I rather think it was my foolishness that did it and said so to the Apple people. They made no remark, simply replaced the whole mother board and charged me NOTHING.
2. With the device by now eighteen months old, no applicable guarantee, I got the oft reported cracked plastic case, where the small, raised notch on the lid touches the case when the lid is closed (I suspect I had been shutting it with a bit too much enthusiasm). Before I finished explaining, the technician told me they replace it gratis, no questions asked and that in one or two cases they had had to do this two or three times. (I note the absence of the offending notches on the new, white MacBooks)
Everyone I know with an Apple machine who has had to get some service (most have had no need) is content with it. So, perhaps most of the moaners are unlucky or just those kinds of people who seem always to have problems with things they buy, people they employ, jobs ....
So, I do not know about Apple's conditions in detail; but I am more than happy with their practice.