Been a while now and still debating which way to go.
Some honest confessions:
I hated Android ICS on my RaZr. It lagged and stuttered and it was just plain messy. Then, Jelly Bean happened. One of the best things to have happened to my phone yet. Whilst my struggle with ICS continued, I was lured by Windows Phone 8. I planned to get a simple(and cheap) HTC 8S. But as the low memory, smaller screen and tons of other issues came up, changed my course towards a Lumia 820.
But Jelly Bean has made me stop in my tracks. To call it an improvement would be an understatement. The phone is blazing fast and ultra smooth. It feels like a brand new phone.
Now, if a dual core, 1.2 Ghz, 1 GB RAM, 4.3" phone handles JB so well, I can only imagine how a 4.7", Quad Core, 2GB RAM would fly with it. Not to mention, a pure, unskinned Android version.
In short, I am sure it will be an upgrade. Am I right?