I am in need of a new notebook. I can not decide if I should spring for a new MacBook Pro, A MacBook or A windows notebook at less than half the cost.
PC notebooks have the price going for them. Be aware though that the chassis is with near 100% going to be plastic and may flex and creak when the device is moved or even typed on. The Macbook Pro's aluminium unibody is a really solid piece of engineering.
Also the LCD screen on many PC laptops tend to be vastly inferior to the screens Apple uses. This is particularly important if you want to actually use the built-in display rather than hook up to an external one.
These are the two major points one notices directly, but the whole internal design and build quality for the Mac is typically way better than what you find in a PC laptop for half the price. You get a great keyboard, slot-in optical drive, relatively good speakers for a portable computer, a HUGE ten-point capacitive glass touchpanel and so on. There's "Apple tax" involved here too of course; a Mac is always going to be more expensive than a similar quality PC, that's just the way it is. If this is worth it to you depends on your needs, and, eh, the amount of money available to you...
Note that Apple hardware usually is niftier than PC in some ways, and sometimes more limited in others. For example, while you get a headset 3.5mm audio jack on the macbook that also doubles as digital optical output (something pretty much unheard of on most PC laptops), you only get 2 USB jacks on that same macbook because Steve Jobs doesn't want connectors on more than one edge of the laptop.
Also note that OSX can be a splash of cold water in the face of experienced Windows users. Macos doesn't do stuff the same way Windows does, so when you expect something to work it might not (like, alt-tabbing, cut&paste hotkeys for example). It might also do something else than what you expect (like, double-clicing the title bar of a window produces hugely different results in the two OSes.)
Sure, you can run Windows on a modern Mac to avoid any issues of confusion, but doing this gimps it to some extent. Particularly where the touchpad is concerned, but may also affect performance with turbo modes on your CPU, battery life and so on. Macs are meant to run Macos, that's the way you best harness their power.