I enjoy Siri on my iPad 3, and miss it on my old 3GS iPhone. I just installed the new Google Search on my phone, and it's very similar to Siri. I asked for the weather and it told me the weather for my town. I asked it to convert 20 deg Celsius to Fahrenheit and it told me 68 deg. It also told me how to spell it! I'm not claiming it's better or worse than Siri, but it's very nice for my 3GS.