I have a 3G, and I'm looking to upgrade to a 3GS in September. I have a few Q's: 1: How fast is the startup/shutdown time compared to the 3G? 2: Is there a noticeable change in Data speed? Can I connect to my WiFi/3G Network and get data faster? 3: Do apps run better? For example, the dreadfully-laggy Katamari game.