I have an iPad, as well as an iPod Touch, and I'm getting an iPhone 4 in the next few weeks. I'm about to buy NOVA, but I'm debating on which version to buy. I can use the iPhone version on all of my devices, but it will be low-res on my iPad, and potentially harder to control. On the other hand, the iPad version looks amazing, but will only work on iPad. Which is the better option for me? Does the iPad version have any other extra features over the iPhone version?