I have used both SkyDemon and AirNavPro on an iPad 1 and found that the interface is slow.
It takes quite some time to generate the map while zooming in /out. Walking through the menu's is slow as well.

How is the performance on the iPad 2? Has anyone tested SkyDemon on the "New iPad" yet?

I'm thinking about selling my iPad 1 and buying a iPad 3 solely for the smooth user experience I'm currently missing.
Is it worth it? Would the iPad 3 be faster? With the resolution 4 times higher it will cost a lot more power to generate the image.

Even the iPad 2 will show quite a performance difference to the original iPad, but the New iPad is even better.