Mac all the way.
We have 4 macs (1 x 10 yr laptop - a little slow now in comparison but problem free)( 2 desktops and 1 mac mini) running at home and use Windows at work.
- no need for virus protection as 4x encrypted and regular updates keeps the computers running nice
- free OS updates
- awesome for photo management
- great for video editing and managment
- App store is great for computer software (games to little handy programs)
- good for running Parallels so you can run Windows on a mac - for me runs 3D solidworks better than my windows laptop
overall yes they are a little more expensive but they are high spec to begin with and run more efficiently for alot longer and last longer - mac all the way