My old mobile phone has recently died, and I am looking to buy a smartphone to replace it.

This will be my first smartphone and I have limited knowledge of what is available. I have owned an iPad for some time and, given that I am reasonably happy with iOS on the iPad, my default phone choice would be an iPhone. My budget limits me to the iPhone 4 8GB, which is currently available from several stores for around $595.

Is this a good buy, or would you recommend something different? I expect to use the phone primarily for web access - voice calls, texts and the camera will be used significantly less often.