So I picked up Sentinel Prime and Galvatron in that Smyth's sale a couple of weeks ago.
Robot Trump is a better toy than you'd expect. He's got lots of nice poseability, a few options to let you mess around with his silhouette in robot mode - wings spread or stowed, weapons in his hands or on his wings. If you have some spare guns sitting around you can easily make him match the look and feel of the comic character. Probably the nicest touch is that the neck whole assembly turns, including the bits that pop up to make Sentinel's head look bigger.
Transformation has some nice touches too - his spaceship mode is very typical of modern aircraft transformers, but the hands fold into the arms, and there's panels on the legs that fold out to hide exposed robot parts. There's also deployable landing gear.
The train/tank mode is a bit shit, which is a shame because the transformation is quite elegant. the hip assembly splits in two, and the legs are straightened out like Sentinel's doing an especially wide splits. The same panels that hide the upper legs swing out and clip into place, more panels flip down to give the illusion of train wheels, and the feet rotate around 180 degrees to reveal pieces that look more like train engine blocks. Finally the backpack swings up and uses the wings to lock into place over the torso.
For such an innovative transform, it's a shame the final mode is underwhelming, it's incredibly narrow, and the only way you can tell the front from the back is the way the cockpit faces.
Overall, a great figure let down slightly by a meh train mode. If you don't like the character or colour scheme (and I'm strongly considering doing some painting to give the orange more depth, like the CG render on the box), then get Astrotrain for sure.
Robot Hitler, by comparison is a case of close but no doughnut. He looks a lot like the IDW character design, cannon mode is awesome, and the spaceship mode feels like an afterthought, but still looks decent.
However, there's a few niggly things that drag him down - his head kibble is a flat piece that flips up out of the chest, and offers no poseability for the head, a stark comparison to Sentinel Prime. The cannon is a bit on the huge side, and between that, the position of the mount point for the cannon and the positioning of the shoulder pads make it very hard to get him into good poses to fire his cannon.
There's so much potential in this Galvatron toy and it's frustrating that there's a few things that keep it back. Still better than the Classics one though.