For non-technically inclined people I recommend iPhones. Their GUI is simpler and things are locked down so you can't mess things up as easily.
If your a techie or like tweaking things, go Android. Find the model that suits your needs (so many choices) I personally like the Samsung models the best over-all but the new razor droid is pretty sleek. Everyone tries to compare the markets but 99.9% of the apps you'll actually use are on both platforms and droid versions tend to be cheaper. Don't really care that iPhones have 1000 more fart apps, just need one.