Perhaps Macintosh simply do not care for their U.K. Market.
Possible, I've never heard about a 28 day guarantee, a google search didn't giving me anything relevant either. For me the funny thing is I've never actually bought anything from Apple until getting an iPod Touch last month, but I've done support calls for other people (friends, relatives, coworkers, etc).
There are two big things that do stand out for me though. The first was when a friend of mine ordered one of their last lines of PowerPC iMacs. He only had it for one week, and although he had un-boxed it, he never hooked up as he was too busy with work. The next week Apple issued their official press release confirming that they were indeed switching everything to Intel. He didn't want to be stuck with an older model so he called Apple, and not only did Apple refund the whole transaction after he sent it back, but he also got a discount on an Intel iMac he bought several months later when Apple finally listed the new line for sale.
The second and biggest thing for me was getting my credit card stolen several years back after an online seller I did business with was hacked. I found out when I got a call from Apple's Support dept. to verify a questionable transaction on my card someone else had made. I was not only able to get the order canceled, but also got some relevant info to pass on to the feds after I verified my info, the whole call took about 15 minutes. After checking with my bank, I found another faulty order was also placed on my card through Dell's website. I called every Dell Support number I could find and never reached a support person located stateside. Even after 2 hours on the phone with support reps I was no better off then where I started. It was like no one knew what the hell they were doing, not only couldn't they retrieve any order info even after I gave the the card info, order date and summary, the whole time I was on the phone with people who could speak English as well as my 3 year old nephew. I was transferred from one department to the another, speaking with 5 or more different reps and I ended back up at the one I started with. I was so pissed I hung up at that point. Thanks to Apple's call I was able to act fast and cancel the card not too long after it was hijacked, as well as get all the bad transactions taken off, although it would have definitely been faster and easier if I could have canceled the order from Dell before it shipped. I can only imagine the fun my bank and the investigators had working out that issue with Dell.
I have no complaints about Windows support here, other than the fact that i will always prefer Windows 98 to XP. Call me old fashioned.
Or masochistic

I dunno, maybe with nostalgia goggles. I could see 2000, but I didn't have many fun times with 98, but better supported hardware and/or drivers can make all the difference. For me, other then nostalgia or some older game that only worked on 95/98, I wouldn't go back, 2000/XP was a far more favorable experience.
P.S. The number one complaint by tech savvy Mac users seems to be the lack of third party media software. iTunes is the only viable media player at the moment which pisses a lot of hardcore music fans off.
Can't argue there, I enjoy loading iTunes to play one song about as much as I enjoy waiting for Steam to load to kill 5 minutes playing a quick game.
I've heard mixed results with using Songbird and Vox as media player alternatives, but I haven't used either. If I'm on a Mac, I usually just use VLC because it loads fast a plays almost everything.
I have no particular favourate. But i'm more familiar with Windows, so i prefer using Adobe software on my PC. Plus in my experience, trying to access the internet through a network on a Mac is just way too much hassle.
I find them both to be about the same, but they each have there own trickery required to get them to work sometimes.
Here's where I disagree, having used both PCs and Macs, I would say you pay more, and get what all companies generally produce anyway. Macs are not as special as their price tags try to imply.
I agree Macs are overpriced and Mac fans are beyond delusional as to their quality, but I don't think the mark-up is as insane as many make it out to be. They're are some amenities to their laptop lines: low weight (5~lbs), 5+ hour battery life, WiFi, Bluetooth, Gigabit Ethernet, an NVidia GPU, the full Apple SDK, and a built in webcam with mic. I'm not sure most people would actually have a use for all that, but it's not terribly shabby for a ~$1000 price point. For me, the main selling point is still the high reliability rating (consumer reports rated Apple's computers number 1 last I checked, I think Toshiba was number 2) and good customer support (at least in the US).