Upgrade.

So:

I want to replace my mobile phone. It's an old babyblue Nokia phone that was already pretty much outdated when I got it. I don't use it much, so I'm strictly pre-paid and I want to stay that way, so no 'free' phone for me with a contract that I don't need.

I do wanna go 'smart' - but I haven't made a decision about which phone I'm going to buy, but will probably go Android.

Any experiences you smart people want to share and help me make a decision?