Finished my VF-25S Ozma at the weekend. I didn't bother with panel lining this time, just did a quick build and stickered it up.
Where as the Alto VF-25F definitely needs panel lining to look good, IMO the grey plastic of the VF-25S actually looks fine without any panel lining.
Bandai have obviously made some improvements to the tooling as the wing-roop/hip guns fit much better on this kit.
Unfortunately, while building it, I broke the hook connector on the neck bar that connects to the collar. I couldn't fix it again. Beacuse of this I decided after completing the kit to glue it permanently into fighter mode.
Luckily I found the peices that my wife had lost, so I can now build my second kit, which I will leave transformable (assuming I don't break anything).
As others have already mentioned, the tips of the horns on the big skull sticker, actually sit on top of the wing hinges, which is likely going to damage the sticker during transformation.
Graham