Nice job. They look really beat up for Imperial ships, what's the story behind your fleet?
Now that you have brought it up Ill have to think of one!
I generally prefer the 'beat up' look when painting models - It gives them a little more character and aesthetically more interesting than the just off the production line look.
These guys were fun to do apart from the panel highlighting which is a real chore but does make the models 'pop' a little.
Ill be moving on to my 2 VSD's and tie fighters/bombers next.