Apple have a few pages on why you might want to switch which summarises the key points: here .
You don't want to ask me, I'll come to your house, take you to the Apple Store, force you to buy a nice computer then sit under your desk until you love it more than life itself.
Do you want to use the computer for anything specific, or just general browsing / Word processing / playing with photos ?
I've not seen a Mac laptop btw with security screws. Maybe Torque or Philips, but that's hardly specialist equipment, sp (we always beat each other up on these threads ). And I haven't come across (but admittedly haven't looked) for a service site such as this piece of geekery which houses the manuals the tech guys at Apple use to get into your equipment and strip it down to each individual component piece ! here .
I've suffered a 6 week wait whilst Apple tried to repair my laptop (it was still working fine, just no sound)... they gave me a brand new 17 inch replacement (the new model) for my trouble, which made me grin (massively) for several days straight.
Macs can run Office and many people love using Safari. You can also upload photo albums like the ones I link to in this thread very very easily.
hth.