I have an Android phone (which I hate), and an iPad 3 and iPod Touch 4. I vastly prefer the user experience with ios. I find it to be smoother, more intuitive, and very reliable. The app selection is superior, especially on the game/entertainment fronts. The iPod is only slightly better than the phone at web surfing, but I prefer surfing on the iPad to even my PC. BFC works great, email works well, and icloud syncing is pretty reliable, if a bit expensive. I don't use my iPad for work, since much of what I do is classified, but there is a massive selection of productivity apps available.
I also like how commonplace ios is. Of my friends/coworkers with tablets, three have iPads, one has a Kindle Fire, and one has a Samsung tablet. Those without iPads tend to get left out because they don't have access to the apps that we do. Once again this is mostly entertainment/gaming related, but also applies to a couple productivity apps as well. I was not impressed by their tablets, and the samsung owner has expressed regret on not getting an iPad instead. The Kindle owner hates Apple with a passion normally reserved for the slayer of ones children, so while he complains about his Kindle, he would never switch.
As far as secure sites go, I really don't have any experience, so more research is needed.