Being my first smartphone, and being a bit of a worrier, I sometimes wonder what would happen if I were to be suddenly struck blind and need to call an ambulance; with the old phones with keys you know how to unlock it and can feel the keys, whereas with a smartphone you have to swipe your finger across the screen, then it's a touch screen.
iPhone 4s or 5 would be easy to call emergency services. You can use Siri to make the call.
With regards to suggestions, it is difficult as there is a vast amount of smart phones available.
I have used Blackberry's over the last few years, and can't really fault them. I have about six e-mail accounts, use the calendar all the time (synced with outlook), photos whilst at work. Text messaging and calling are standard on all phones, lol
The Blackberry software that syncs with outlook is excellent, and I can not fault it at all.
I will be shortly retiring my Blackberry's, and purchasing the iPhone 5 (which I have been waiting a long time for. The iPhones are great, especially if you have other iOS devices. I started using my iPad at work, and can no longer goto work without it. They are great for reading reports, emails and searching the web.
It is possible to sync iOS devices with outlook, but I have not had as much success as with the Blackberry. I will master it once I get my iPhone though. The iPhone calendar will sync using iCloud to your PC so there is never a need to plug it in.
Many people, including shops say the Samsung Galaxy S3 is the best smart phone available, but I am not sure on it. I had a brief play with one in a shop, but didn't really like the display or menu system.