If you want easy, then Mac is for you. Especially in the photo/music/movie department. Windows completely lacks any kind of decent editing software, and the organization software is mediocre. Internet access is a lot easier on a Mac too. You get a much better web browser (though, of course, you can install Safari on you PC too), you get a wifi N card (even some new PCs don't have this for some reason), and you get the most virus proof and secure operating system in the world. No clunky anti virus software needed. Microsoft office (by far the best Microsoft product) is available for Mac too. I know some people say it's crappy and you loose features that are present in the Windows version, but I certainly haven't noticed that any of this is actually true on my version of Office:Mac.
I notice you say, "but now the OS differences seem minor". That's not exactly true. Windows will never be as secure from viruses, nor as easy to use as Mac OS X, because it must be designed to run of hundreds upon hundreds of different versions of computer hardware. It's just not possible to make a product like Mac OS X, unless it's specifically designed for a very few machines.
Lastly, it is true that Macs cost a bit more than PCs, but not as much as people tend to think. When I bought my new MacBook Pro this last summer, I compared it to every 13" laptop PC on the market. The 13" MacBook Pro cost just $100 more, or in some cases less, than all 13" PCs, with the exact (or as close as possible) hardware configurations. This has lead me to believe that all computer hardware costs the same for the computer manufacturer, so the consumer price will always be similar for a similar machine. The reason some PCs are exceptionally cheap, is because they have previous gen, older, or less powerful components. You get what you pay for. Cheap PCs are slow, unreliable, and usually only last a couple of years (I should know, I've got two of them). More expensive PCs cost the same as Macs.