The main difference between bikes is the feel of when you are sitting on it. Since you are 5'9" I really suggest sitting on them first because I think the Gixxer is going to be a stretch for you...unless you lower it. Honda's are more evenly balanced where the GSXR's are more aggressive. This is why I chose the Honda. As far as maintanance goes, they all will be about the same. It just depends on how you treat it, just like any car. If you decide to leave it outside all year round then prepare for issues or a reduced lifespan.

As far as looks, everyone has the older style Gixxers, which is another factor that made me decide on the Honda. Now, the new style of Gixxers are not seen too much and they are hot.

Ducati's look good for sure. I have never ridden one, but all of the people that I know have ridden then said that they peferred their bike better. This could be because they are used to it, but thought I would let you know.