CONGRATS TOM! I love using mine too. It's smooth and fast!
I thought there was a chance that I might end up not enjoying looking at my (small - compared to the iPad) screen on the iPhone because of the size difference. Ha! Not a chance. Having the iPad at a Retina display resolution does nothing but compliment my iExperience with the two devices.
Surprisingly, for me, the size isn't an issue. The Retina display has a lot to do with that. Having two Retina displays is awesome! I never owned an iPad but I have seen the screen on the 1st and 2nd and they do not compare, so having both devices with Retina is awesome!