The unlock screen is not that important. What I'm really impressed with is the graphical user interface. It does not have any buttons, and uses gestures heavily for one handed and two handed use.
I had an iPhone and the home button degraded since I got it until it stopped working. I went to an apple store to get it replaced when I first began noticing it, and they said the blew air on it. It didn't help at all, I ended up suffering with a bad piece of hardware until the button did not work anymore.
Eventually I replaced it with a new iPhone, but 4G LTE had been out for a year and was now very stable and prevalent in my area. So I sold it switched to an Android 4G LTE phone.
I also owned a Blackberry 9930 along the way, and I loved the keyboard, it was the best I have ever tried on a phone. It was lacking on the GPS area so I made my move to an android phone. I still remember that Blackberry though, it was something about the no nonsense experience that makes me want to give it another shot. I also owned a 9700 before that.
As far as the keyboard for the best experience there is the Blackberry Q with the 9930 hardware like keyboard. With the touch keyboard, I like to turn off auto-complete on my phones, but this new one does not look very intrusive. I was going to try swipe, but as I was about to install it I received a warning that it will capture everything including my passwords. So I decided not to try it. There will be a new video coming out that goes deeper into how the touch keyboard adapts to each user. I'll post that when it comes out.
I am loving 4G LTE unlimited with Verizon with my interim phone in the meantime. I can watch as many videos as I want and I don't have to worry about loading a Youtube video with the fear that I'm going to hit my data cap. It also displays in high resolution unlike the 3G capable iPhone 4 I had. The videos used to come out grainy and took a long time to load.