The whole Mac vs PC thing is outdated. the best person to ask is me, simply because i have both. not trying to brag but i need both for fun and school. both have close spec (I will post at the bottom of the post). My Mac is better for anything creative like music, video, photo and general use such as browsing the web and what not. My PC is better for gaming and modding my xbox. Also my Mac, NEVER and i cannot stress this enough, never gives any trouble. It is simple were it count and complex where it counts. how it is also good for some gaming, just a smaller variety. My PC has en endless list of problems and its only a year old, but it is still standing so far. It is really up to your own personal preference and what you want it for but i would try both because you may not know what you are missing, well of course you financial status applies here but luckily im able to own both.
PC (Desktop) (Not made by me)
Processor: i7 2.8ghz 1st gen
RAM: 6gb 1600mhz
Graphics Card: ATI Radeon 5870 1gb (x2) (total:2gb)
Hard Drive: 2TB (In RAID Stripe 0 or something)
MAC (Laptop)
Processor: i7 2.5ghz 2nd gen
RAM: 8gb 1333mhz
Graphics Card:ATI Radeon HD 6770M 1gb
Hard Drive: 750gb 7200rpm
so both are great, but if i had to choose for what i do it would be the Mac for sure