Build is nice, 4.7 inch and still fits in my jeans without any problems.
The overall speed of the phone...it takes longer time to say "sigh" than installing a big game or a big app.
Lightweight, my previous 4.3 inch HTC is alot heavier.
Camera is outstanding, especially the burst mode, almost sounds like a DSLR.
Screen is outstanding quality.
Smooth gaming, tried a few Tegra 2 games.
Sense is very smooth. I still miss some functions from sense 3.5. (Quick launch menu)
And one thing I like in general about HTC phones is you get a screen and nothing else.
If you look at a Samsung (SGS2, Nexus) for an example, you'd get a ton platic around the screen that makes it look big but nothing else and probably won't fit in your pocket.
...and hey...it isn't just expensive...you get alot for the money.