Coming from a mac owner (PPC not intel) I'd personally go with a pc over an intel mac (Desktop anyway, laptop is a different story really)
Reasons for this are: Hardware compatibility,
Ram/Hd isn't too bad if you can do the upgrade yourself but anything else is an utter pain in the ****.
EFI is a complete pain in the **** why they didn't just stick with bios i have no idea.
OS X is nice but frustrating at times (until you get it set up how you want anyway) and overall the PC is a MUCH better deal.
But then, it depends what you want a PC/Mac for if its just basic internet browsing, listening to music, burning cds, sending emails etc macs are fantastic purely because the integration of everything is fantastic, the iLife suite integrates with the os/other apps perfectly and it just makes using it a breeze.
Gaming I'd go with the PC any day of the week as i would for anything other than basic computing.