The model is incredibly detailed & reflects the source material closely, even though certain compromises were needed for the legs.
The proportions of the droideka are impressive on the whole, although the legs are perhaps a little too tall & unable to move. Some articulation would have been nice.
The distance between the legs could perhaps be improved though, since they should be equally spaced around the reactor bulb. The reactor housing should be closer to a sphere.
Moreover, the rolling configuration works reasonably well, despite deviating from the onscreen droids.
Click hinges are visible on both the droideka's arms & spine. These contribute to its folding function. The upper body moves down to the reactor bulb & the arms also retract to the body. Finally, the legs are removed & replaced upside down and the head folds down to complete the curved armour.

The droideka flexible whip elements used as power cables & correctly positioned to supply the blaster cannons. These blasters are surprisingly intricate and narrow towards the blaster tips, exactly as seen in the movies. The struts between the weapons and the shoulder armour segments are accurate as well, although they are not functional.

Overall, job well done by Lego compared to their earlier Technics version.

I absolutely loved this build. I think the piece utilization was amazing. Kudos to the designers for using lasso pieces for the wires and lipstick pieces for the eye, as I think it makes the build and experience so much better. I also think that the ability of the arms moving is a nice playability feature to fit in to a model. The only thing that gives the build experience a 4 is that the minifigure was not the best, and the center eye lipstick piece keeps falling out when in the ball formation. I do think that the 2002 figure does stand up to today’s version easily. 2002 even rolled up! This is just a little nitpicky as I don’t have it in the ball position, but I think that it is a little tedious to transform it and maybe some blue technic axle/pin piece so that the legs could rotate. So in conclusion, if you just care about the build, then I’m sure you will love this. But if you’re like me, you will love it but notice some of the imperfections.

Don't get me wrong, the model looks really good: a lot better in person than it appears on the box. The function to move the arms and roll it into a ball are also very appreciated and, personally, I find the little droideka figure rather charming.

However, the model itself is not very sturdy when put together. It is rather loose around the "head" area, and there's not much securing the "piston" parts of the arms; they will snap off easily if bent a little too far, which is easy to do on accident with the ratcheted joints. Additionally, build process became rather frustrating when inserting the whip pieces(which are supposed to represent cables), as they refused to stay in place; I eventually got them to stay, but they do not feel very secure.

Again, it looks great as a display model, but it's not the most sturdy of builds. The droideka minifigure is also a bit unstable and easy to fall apart, even if it does look decent. Good display set, but best not to touch it much after it's done.

Would give this 3.5 out of 5 if Lego gave that option. I love the fact that Lego is giving adults high-quality, detailed display builds under $100. This is a major win in that regard and they should do more sets like this.

This particular one has just enough annoying about it, though, that it's not a smash hit. Some really finicky parts during the build with loose or odd fitting pieces, and a frustrating "minifig" that is also obnoxious to build and totally unnecessary, take it down a notch. Also, I'm not entirely sure the size of the droid really warrants a plaque—maybe I'm in the minority, but I don't feel like every adult-oriented Star Wars display set needs to have a plaque. I normally just put the plaque in storage.

No plaque and an MSRP of $50-55 to make up for the lower piece count, and this is a 4.5 out of 5.