Updated! It's my main after I magnetized it with 4x1 N48 on the inner layers and 4x2 N50 on the outer layers. I think the outer layers could be a little stronger, but it's still pretty good.
I purchased my stickerless FeiTeng on 16Jan2017 from
ZCUBE.HK
This is an awesome cube. It's better than my WuQue and my G4. This cube could easily be compared to the Cyclone Boys G4 since every single piece is the same, but just a little smaller. The picture below shows this. The FeiTeng is on the left and the G4 is on the right.
The size is very easy to turn and fits very naturally. It's easy to do wide turns and outer layer turns without having to strain to reach the other side of the cube.
This next picture shows the FeiTeng next to my 57mm AoLong. It's the same size. It's perfect for carrying around in my cargo pants pocket.
Performance is great. One major difference between the G4 and the FeiTeng (besides the size) is that the FeiTeng turns wonderful out of the box, whereas the G4 had a lot of catching issues until I shaved off the flash and broke it in. The FeiTeng feels like the flash has already been removed and broken in a little. However, when I inspected the pieces, I saw some flash. I shaved off the flash, broke it in, and it's awesome. Mine was a little loose out of the box, so it felt like it had the possibility of having a pop, but no pops at the correct tensions. Corner cutting is on par with the G4.
It feels like a G4 with a Thunderclap spring swap! Inner and outer layers turn effortlessly. The inner and outer layers don't mis-align when doing Uw moves.
The stickerless shades are a major improvement from the G4. The green, yellow, and orange are much brighter and make a much better contrast between the other colors. The major problem with the G4 was the orange & red were too close. The yellow on the FeiTeng is florescent yellow, whereas the G4 was a regular yellow. This means that the FeiTeng contrasts very well in good lighting, but is hard to tell the yellow and white in dim lighting. The red is a beautiful candy-apple-red. I love it.
Overall, I vote 4.5 out of 5 on this cube.
It costs only $9.50 USD on the Cubicle. It only comes in stickerless. For the price, this cube is the best I've tried. Better than the MF4S, or even the Yuxin Blue with the Thunderclap spring swap. (Disclaimer: I have not tried the Guansu or the Yusu R.) But it's cheap enough, why not get one?
I recommend this cube.
unboxing video from SpeedCubeReview: (skip to 5 mins)