The Ipod Mini also gets my vote as a music gadget.
However, as a running gadget, I will point out that you can buy a bog standard MP3 player on Ebay for about £30 and you wont get mugged for it - unlike an Ipod with its very visable white earphone cord. If you use your Ipod please use generic headphones if you run in a dodgy area.
I have had mine for 18 months now. It has never got any worse or any better so I just continue to run through it. Some days it is very painful but this is usually around the change of seasons. I really cannot face the idea of an injection in the ball of my foot and have heard that unless you get someone who does alot of these injections it might not even work as it is very specific where the injection needs to go. My friend also has Morton's and is considering the surgery route. I am still trying to talk her out of it!