Did I hear macin-tosh? Ugh...
Older macs were made to high standards. Apple then decided to try to be more competitive and started using poundland components.... Just a quick run through of the faults I can remember off the top of my head failure/return rate I've had over the last 18 months:
eMac 1.25GHz : 100% return rate, "capacitor bulging" issue, fixed under warranty after a long (almost 2 year) battle
MacBook Intel: 20% battery failure within 6 months, ??% Hard Drive failure within 6 months (didn't keep track of these as they're covered by Applecare - I can get more accurate figures if you want...)
Mac Pro G5: Leaking cooling system, at first this seemed quite isolated, but I just found 5 more machines in a lab of 20 that are scrap metal; and the other 15 are behaving odly
MacBook Pro Intel (2008 model): Overheating (temperature reaching 98C under load); battery failure in 3/5 machines and HD failure in 1/5
MacBook Pro Intel (2007 model): Overheating, battery "bulging" in 4/5 machines
MagSafe adapter: frayed connections, melting cable all within the 3 year lease - about 20% sent back/replaced each year (had them only 2 years now)
Don't even get me started on the software... Anything up to Os 8 was great; Os9 attempted multitasking and failed majestically. OsX initally was great, but now too many people are starting to use it - and to do more than just photoshop, quoting the T&C on an Apple update "installing third party software may have undesired consequences". As such, the bugs are starting to surface. 10.4 had 11 different "service packs" (or as close to a service pack as you can get). Over the course of 2007, Apple released on average 10times as many patches than Windows. (I can get you exact numbers if you want)
The first (and second and third) official trojans have been found for OsX. One believed to be in the wild. More are coming.
10.5 is still a beta product. 10.5 server doesn't even consider a minute to be 60 seconds, so unless you restart/reset/resync it almost daily, it will throw kerberos WAY out of whack. and that's leaving out all the other problems we need to deal with (needless to say, all 700 of our macs still run 10.4.11 and we're looking for ways to install that on the newer machines too, which come with 10.5 by default).
Rant over, let the Macolytes flame me...
That isn't to say Windows is perfect. I'm just saying, compare an Apple laptop with any other mid-range, 3-year lifespan machine out there. You will find cheaper, you will find more expensive. Don't expect the best just because it has a half-eaten apple stamped on the cover. (Personally, as I dual-boot on the MacBook Pro, I can't live without the right click in windows... its a pain to have to use a third-party tool to hold some random key and click, and its even more a pain to carry a mouse around). I'm trying to get my toshiba satellite working again, (don't even get me started on Toshiba - I was one of their loyal fans until I bought a M45... the quality was/is WORTHLESS!)
IMO, your best bet would be a cheap and cheerful Sony/Dell - buy it expecting it to live 2/3 years; then change it!
Michele