I went from a Powerbook 100, to a Powerbook 150, to a Powerbook 180, to a Powerbook 540c (first lemon, first two years of AppleCare Hell); they eventually charged me another $1000 to replace the 540c with a Lombard, after several years of delay during which I relied on the older Powerbooks. The Lombard was a lemon; three more y ears of AppleCare Hell, never solved its crashing problem; after six tries they charged me another thousand to upgrade to a Pismo. That was flaky for three years and five AppleCare visits (one of which got me the SevenDust virus, but they closed down their New York Applecare depot after that debacle and moved service to somewhere in Texas). After AppleCare expired, I was able to open the thing up myself with no further risk of a warranty violation, and pulled out the original Apple brand memory card it had come with -- which they'd never touched --- and replaced it with a third party chip.
No problems since then.
I'm still using the Powerbook 150 and 180, and once I get my soldering skills to where I can replace those teeny little motherboard fuses, I'm going to be using the 100 again; found some little tiny lead-acid rechargeables that even fit into the case and give me portability.
You wouldn't _believe_ how fast the 100 boots OS 6, and the 150 and 180 boots OS 7.5.3, and Word 5.1 comes up in a couple of seconds and just works fine on all three. And the 180 has a monochrome screen that's completely readable outdoors in full sunshine.
Far faster than any newer computer, for the simple stuff
Then again, I'm also still using DOS 3.11 and WordStar (grin) when I really want to write something without worrying about anything but the text (yes, on the Powerbook 150/180, in emulation).
So, yeah, I like Macs. I just don't like Apple all that much.
I'll probably buy a Mini next time, just to be able to use something newer than X 10.3.9, and for bigger graphics files. I think the iMac is too closed to be easy to work on, and the big boxes are too noisy and the hardware's changing too fast to spend all that money so often.