My favorite's the Jalkehi (image kf-11) ... I also like the Mining Hauler, Kilrathi DD-1 (looks a bit like a few alien warp-capable ships from various star-trek eps).
The cargo-pod ship (first post) looks like a tan colored kilrathi version of the main ship from Star Control 2.
What are the 4 pods for the Cutter? Looks like a sensor pod (or maybe an ECM jammer), a missile/torpedo (or perhaps fighter) pod, a large landing pod (marine/crew transport?) and a cargo/fuel pod.
The KF-06 (forth set of images) reminds me heavily of a Macross Veritech cause of the stretched-hexagon-shaped back.
The "K-F not mine" is interesting... what is it, a fighter with mine-laying, or mine-throwing, or mine-collecting/disarming abilities? That large triangular hole/pocket in the lower center looks like it would be a good spot to pop mines out (for precision placement) or in (for collection/removal)... or even as one big bay for a super-sized missile or super-gun or something (would be an interesting concept... some kind of capital-ship level weapon designed for a fighter but as such designed to only be used for 1 to 3 shots before its battery is dead. A large energy-based weapon would be faster to fire than a torpedo (no 30-second target-lock) ...
... imagine... you show up with just a few of these ships, and then at any point your near their big ships you can just quickly turn, point at them, and fire off of one or two quick rounds of heavy power (something akin to a ship-to-ship anti-matter turret) and then you're right back into fighter-vs-fighter combat. No need for a slow target lock, or a slow-moving missile or torpedo that could be shot down. And cause its an energy-based attack, you don't need to worry bout matching shield phases or whatnot cause then instead of doing structure damage you just blast a huge hole into the shields and your wing-mate then uses his super-shot to make the kill (or you do it yourself if your super-gun has enough battery/fuel to do 2 or 3 shots).