I've been using a Mac now for nearly 2 years. I have to say that buying it was the worst thing I could have done regarding computer purchases.
I'm now on my 3rd unit thanks to build quality issues. If someone tells me Apple has better build quality than PC manufacturers I can't help but laugh hysterically. Even the unibody MacBook (and Pro) have softer feeling tops and bottoms than my plastic HP notebook.
Then theres the price performance ratio. The Dell Studio XPS 13 walks all over the unibody MacBook in terms of price and performance. $1299 for a faster processor, dedicated graphics, and a better OS? Yes please. Look at 15.4" systems. For $1,099 at newegg you can get an Asus with a 2.4GHz Core 2 Duo, 4GB of RAM, 250GB HDD, memory card reader (8 in 1), HDMI, eSATA, full size ExpressCard, LED backlight, 2 year warranty (Asus also typically offers 1 year of accidental coverage if you register the system), 30 day "zero bright dot LCD" warranty, and a 1GB GeForce 9650M GT. It also comes with a carrying case. According to the specs its also only 1.1" thick.
Newegg.com - ASUS N50 Series N50Vn-X1B NoteBook Intel Core 2 Duo P8600(2.40GHz) 15.4" Wide XGA 4GB Memory 250GB HDD 5400rpm DVD Super Multi NVIDIA GeForce 9650M GT - Laptops / Notebooks Oh and you don't need any sort of adapters to hook up to standard displays. Amazing! I absolutely HATE DisplayPort. Apple only used mini DisplayPort for one reason and one reason only. DisplayPort itself is completely royalty free. By using their own connector, they get to pocket the entire $29.99 they charge you for that adapter.
Then theres OS X. Don't even get me started on how much better Vista and Windows 7 are. OS X requires the user to give up WAY too much in order to have a stable and functioning environment. You don't get even 1/4 as many software choices as Windows, plus the software that people generally consider "equivalent" is anything but. Just look at DVD Player compared to WinDVD, or Toast compared to Nero. No contest at all, Windows software is better by a long shot.
I just wish I had gotten this 3rd system, second replacement, before the economy tanked. That way I could have sold it and washed my hands clean of Apple computers. But now its impossible to find a buyer who doesn't want to low ball you on price.
I love my iPods and my iPhone, but the computers are junk.