I've got both an iPhone and iMac. The phone syncs easily with the Mac applications and should you ever need to do a hard reset, you will not lose your information because it will be stored on your computer (in iTunes I believe).

What I don't like about the iPhone is that you have to recharge it daily. The battery life is diddly compared to other cell phones.

If you have ever had the pleasure of owning a Mac, you will find that you will not lose all your information should your computer crash. Usually only one specific application will go cuckoo but the rest of the applications should work fine. And unlike PC programs, Mac is very user friendly.