I can't say about transferring from PC to Mac... because all I've ever used is Mac. Even when I worked as a paralegal, my employer used all Apple products... even way back then (going back to about 1989). My husband is clueless about all things tech... but even he can use our mac. He can plug in his ipod and upload music, go online and shop (amazon), read the news, download music from the itunes store and then onto his ipod, watch youtube.... (that's about all he does... lol).
The macs are SO nice. Very intuitive and user friendly. And while we used to use Norton anti-virus, when Apple came out with their next to the last OS (Leopard) the Norton people even stopped MAKING an antivirus for it. I tried to upgrade/update as I always had done.. but oops... it wasn't necessary. And was so unnecessary that Norton stopped making one for it! Now with Snow Leopard... things are even more secure. I've never had any security issues. EVER. And the Mac mail system is SO much easier than logging into my account through my browser... Having never been a PC user, I never understood why people who were on their computer once a day didn't bother checking their e-mail... lol. Then I used my mom's PC at her house during a visit, and figured it out. On macs... your mail icon sits on the bottom of your desktop in your little "dock". You just click on it, and there's your mail. It is SO easy to look at. (Both to check it... there's a red bubble on the postage stamp icon that tells you how many new emails you've received, without even opening the program.... and to LOOK at. It is easy on the eyes!)
I honestly don't do much with graphics and photos... although I do keep my family pics on my mac. And it is SO easy to upload/download photos and play around with them. But it is my understanding that if you are into it at all, that mac is the BEST at graphics and art functions.
You can even learn to play the piano or guitar through garageband!
Uploading pics from my phone to the mac via bluetooth? piece of cake.
Installing a new program? Pop in the disc, follow the simple onscreen directions, and let it go. Updates? Automatically pop up on a schedule you can set, and let you have the option to update now or later, or never. And they are Simple. Everything is easy.
When we recently upgraded from our "old" imac from about 5 years ago... to this one (last summer), I quite literally: took the old one off my desk and set it on the floor, took the new one out of the box and set it on the desk (it is all one piece), plugged in the appropriate wires (there's a power cord, a DSL cable, and a line to the printer), ran a Firewire from the old one to the new, and turned it on. In 30 minutes (literally 30 MINUTES) EVERYTHING was transferred, I was online, and the old one was packed up in the original box that I had saved.
Even for someone like me, who is NOT super tech savvy, it is easy. And if there is ever a problem, support is a click away, or a phone call. And there is always the Genius bar. Go into the store sometime and sign in for a tour. They'll be happy to explain to you the benefits and anything you need to know about using both in your home.