From all the videos I have seen, I don't think the GS2 has a notification LED, I might be wrong though.
What is up with the misconception that the E3d only has 768MB like the Sensation? Unless there was a last minute change and the bean counters decided it's a great idea to rip some ram out of the E3d, it should have the from Sprint officially announced 1GB of ram.
Yes, Sense is pretty intense on the processor, uses up more memory too, so I hope that things will have less lag on the E3d. The Sensation seems perfectly fine without a live wallpaper, check out this "multitasking" comparison video from our friend Sam, the guy loves the GS2 but he does try to be fair.
YouTube - samjpullen's Channel
In the real world, you will never know the difference between the two. The more I like at these comparison videos, the more I like the cohesive look of Sense. Touchwhiz is looking uglier and uglier to me every day.
The browser on the GS2 seems to handle flash videos better and also seems to be a bit smoother, but I don't think I'll miss that in the real world. In the end, they are both great phones and everyone has to make their own decision on which they like better. For me it's the E3d.
Now lets see what that Photon 4G looks like.....
June 9th.