Theres my tank, probably not as good as your stuff in your game, but im happy with it.
The guy who made the turret didnt even like it? I must not judge graphics as harshly... all I think is if it looks like its representing the subject ok, it doesnt really need to be genius.
z80, im only doing old style models at this stage, i still think you could sell a game with them, if im wrong I guess im wrong and then ill move on, but I think just using textures at first is a good simplification cause I actually expect to get a proper game finished by the end of 2010.
So maybe keeping the technology simple (like direct x 8) is my idea.