Thought this may be relevant as well so I thought I would say that:
I have used the 60mm F2.8 canon Macro lens with this camera and it is a great lens. Works very well with the camera and you can get some great shots. I recently bought the 100mm F2.8 Canon Macro lens and it is just as good IMHO, although, as with most macro lenses, it spends ages with the autofocus sometimes which can be annoying.
So far I have not found many things about this camera that I dislike. The only thing I can think of is that the battery life shows up as full, but as soon as it goes down to 2/3rds then it will only last a very short time, so the battery indicator isn't great, but just get the battery pack and carry spare batteries and theres no problem
Anyone who hasn't tried using the RAW image setting on this camera is missing out! RAW is far better than the highest quality of JPEG file IMHO.