I like the Shanghai tower that was completed most recently, with the circle shape at top. It is simple and one of the best designs around in my opinion. I think the newest super tall there is a bit too modern. I am interested by the new tower, but I don't necessarily think it is a great design. Kind of looks like a magazine rolled up. I think it is supposed to be transparent on the outer edges, because if I remeber correctly it is built around a solid core, but we'll see. It is supposed to have the tallest open air observatory in the world. Its something like 1,500+ feet tall, which is short these days. Have you guys seen the nakeel tower or the kingdom tower plans? I'm not sure if they will be built as currently designed, but their height is staggering. Of the ten tallest buildings in the world, a majority were built last year. Interesting.
Nakheel:
compare this to the empire state building:
the technology exists to build one kilometer high, but the economy is not capable of demanding this much space right now, obviously.
Kingdom tower:
haha now compare the burj dubai to the kingdom tower, keeping in mind how small the empire state building (itself a super tall at over 1000 feet) looks in the previous comparison picture.
edit: the last picture isn't of the kingdom tower, I thought it was.