I'm not recommending an iPhone because I'm a fanboy - I'm recommending one because it fits the bill for what the OP wants. If the very latest features or most advanced operating system isn't a top priority, then it's a great choice.
thats pretty much what i've been saying about the iphone since its launch!!! its always been a step behind technically but 5 steps ahead from a marketing standpoint.
I personally wouldn't touch one with a bargepole, I don't know a single person who hasn't had issues with an iphone of any generation.
my missus had a similar requirement to you and to be honest, a 'basic' non touchscreen phone these days is either a £10 pay as you go basic brick with no features or your into smartphones at the low end (bottom of the range galaxy's, HTC's etc.) which from my experience are not worth buying as they don't have enough power in them to run the operating systems quickly. I had a galaxy apollo a year or so ago and it could take 30 seconds to open the address book!
If i were to buy a phone today & latest spec wasn't an issue, I'd look at either a blackberry bold or the last of the htc desires. if your contract allows it though, you can strip all the bells and whistles off a galaxy sII to give you all the basics but have handy useable apps downloaded to it & you will have enough phone to run everything quickly, have a very good camera & be future proof enough that you won't be worrying about software support in a year or so.