Damn, I'm seriously inspired by all of these. The the long nose and curves on this one look amazing, kind of reminds me of a Dodge Viper. I want to start utilizing Sketchup more regularly now to achieve the same amazingly clean and detailed look. Personally I would include less linework to make it look less obviously like a 3D render, but that's more of aesthetic choice on my part. Great work!
i think this ship looks quite agile and incredibly fast. it reminds me of the Arwing from starfox combined with a Jedi starfighter from starwars. the only criticism i can think of is that the wings look like they could be easyly shot off. that could be a problem for the pilot.
It has maneuvering thrusters! And guns you can actually aim! It does look like you streamlined it without much potential for generating lift of lowered radar cross section though. And are those intakes on a spacecraft?