True, towers in the marina and on SZR are starting to look the same. In the marina tameer's newest building's pretty awful, it's the typical dubai kitsch design and the roof doesn't go well with the rest at all:
There will be some great ones in the marina though, not all looks the same. Damac's ocean heights might be a candidate for best dubai building when built, the only downside though is that it's damac who're building it
On szr the problem isn't only that they're on standard plot sizes but also that the plots are small so that means developers will have to make maximum use of their plots if they want to make any money. I like the new tallest on szr...
but there are some pretty bad ones aswell, such as this gold-plated tower going up 2 doors down. The tall towers will most likely all be similar in shape since they'll have to be pencil-thin.
Down near the fairmont hotel one of the towers getting built has a nice enough shape, can't find a pic since I don't know what it's called, all I know is that it has green glass. Down at that end there are some interesting towers planned, most likely the plots there are bigger so that allows for some better architecture.
Business bay is most likely to have the best collection of buildings in the city though. Most of the planned towers there are great, some crap ones of course but mostly good.
I've also seen plans for a 4 seasons hotel down at festival city, I'll try and find the image since it looks fantastic.
There are some crappy buildings are on the palm aswell, they're nice on their own but when you put about 20 of them that look exactly the same it looks terrible. It now looks like a communist avenue because of them.