just got my NX and warbird (issues 4&5), I have to agree that the warbird is poorly balanced, mine hasn't fallen over, but it's listing to starboard. Unlike Adam, I'm a bit disappointed with the detail on the warbird. It might just be my experience with building, painting and weathering models, but the hull is too uniform. Sure it's got generous weathering, and lots of painted on windows, but the lack of aztecing and detail under the weathering makes the weathering stand out too much, it's like they applied the heavy mud wash to cover up the lack of detail, rather then a light wash to enhance the detail that's there. Also, while it agrees with the renders in the magazine, the nacelles look overly long.
The NX-01 is somewhat better, the aztec is well done,although much more simplistic then the pattern on the Ent-D. That being said, the hull color is overall far to light, on the show it was more of a dark titanium or steel color, this is more like a silver. The stand is far sturdier then the warbird, but it is difficult to take on and off because of the position in the cutout between the aft catamaran hulls. Detail painting is a letdown, the saucer impulse engines are the same shade of gray as the manifolds, they're not painted separate, the catamaran hull engines are painted the same solid blue as the deflector, and the divider between them is painted blue instead of grey, and the main deflector is also solid blue instead of bronze with blue behind it. The windows are unpainted, but since they're atleast molded on and consistant on the whole model, they're not too bad. Also, there is a broken seam on the sides of each nacelle, up by the bussard collectors and the plastic strips that separate the upper and lower Warp field grill assemblies on the warp nacelles are all warped.