I've had an Incredible since it came out. It's rooted so I get the wireless hotspot for free (which I use on vacation with my ipad). I checked out the X yesterday, and found that even though I'm a fairly large guy 6' 200# it was a bit too big. Also it seemed a little laggy, which is odd, but substantiated by some vids on droid-life.com. I'm going to keep my incredible until someone comes up with a true high def screen on an Android device.
I've had my X for a day now and honestly haven't experienced any lag. The browser is a lot smoother than the one on my Droid (overclocked and running 2.2) and pinch/zoom as well as scrolling are very smooth for me. Seeing how well the Droid's browser improved in 2.2, it will only get better once the X gets it next month. The browsing experience is so much better on the X now and the 4.3 inch display makes it so much more enjoyable that I'm typing on it right now while my laptop is sealed in its bag.
I agree with the experience of having a larger screen makes browsing that much better, however, for som reason, my browser just isnt performing quicker and the pinch to zoom isnt as smooth as my Inc. However, if I can get those issues ironed out, Im in loveAnother thing also, swiping screen to screen isnt as smooth
but, if I use LauncherPro, its smooth as silk.
Now, if we can only get the WiFi issue resolved also.
Remember the Droid's browser post 2.2 (on 2.1)? And now look at the Droid's browser with 2.2. Big improvement (smoother and faster).
Again, I'm not having any issues. No Wifi issues or pinch/zoom issues. Everything (including swiping homescreens on the stock launcher) is smooth and just works the way I wanted for me.