I got this cube while trying to find something with the right balance between function for portability. Something like the GAN 328 is a neat novelty, but not practical for solves (too small to rely on muscle memory, poor turning, etc). The YJ ZhiLong quickly became my main, as it has a great feel, decently low volume, and the size is perfect for fitting in a coat pocket while not too small that I run into the muscle memory issues like with keychain cubes. I've got large hands, but piano fingers - and I think as a result, some algorithms are actually easier to execute on this size.
I bought this cube a couple of months ago, and I am still super impressed with it. I think it definitely hits a sweet spot for those with certain hand sizes/shapes - and the price makes for low risk if you're curious to try it out.