Easily my favorite cube, even thought it's just a 3x3x3 shape mod. A ghost cube is always a challenge to solve, even when you're familiar with solving a 3x3x3, and even when you've gotten used to the ghost cube. I broke my original one, which was a bummer, because I spent hours painting it to look like metal with worn metallic blue paint chipping away. I just got a new one and re-stickered it with chrome/blue oil-slick vinyl. It can look blue, gold, purple, teal, and magenta. It looks amazing. Definitely cooler than my old one, and way cooler than the plain brushed silver it came with.

Yes, we all know the ghost cube is challenging; but while challenging is fun, frustrating is not. And this is frustrating, because you can't focus on your solve, because you'll be dealing with lockups, trying to wiggle it and rotate and look for where it's locked and you'll forget where you are in your solve and have to start all over again from the very beginning. And that's not fun at all. I've just had that happen 3 times in a row and much as I hate to have a cube sit on the shelf unsolved, it's just not worth it to spend all night dealing with the poor usability of what would otherwise have been a fun, challenging puzzle. Get it because you need to be able to say you've solved the ghost cube, but after you've got the bragging rights, you won't be pulling it off your shelf for a fun solve again, because the constant lockups are too frustrating for it to be any fun. It's just annoying.

I did try lubing it with DNM37, it didn't make a difference.

This is a very fun and interesting shape mod, it feels almost like a cross between mirror cube and mastermorphix. Mine turns great out of the box and I was really surprised with how well it corner cuts, which I find to be a huge help on puzzles like this that can be tricky to keep the layers aligned as you're solving.
A few other people have mentioned this, but due to the shape of the pieces a few of the stickers start peeling as soon as you scramble the puzzle because they're slightly offset and catch on the other pieces. You technically don't need stickers at all though, and if they get worse I'll just end up peeling them and enjoy my matte black cube as is.

I have only solved this cube once. It took me about five hours, despite most shape mods only taking me about five minutes, primarily because I kept losing track of where I was in algorithms because the cube constantly locks up and finding the cause of the lockup is near impossible to do quickly. Overall a good cube if it wasn't for the unbelievably bad turning (I've compared the turning to a 1920's car with the steering wheel welded in place when describing it to friends if that gives some idea). Also the stickers somehow started peeling off just from the lockups.

Honestly, it’s a super fun puzzle to solve, really makes you think no matter how familiar you are with a 3x3, but it’s still just a 3x3. The biggest issue in my opinion is POPPING, it pops A LOT, and a pop here and there isn’t bad, but if you’re in a middle of an algorithm and it pops you’ll completely lose where you are and odds are you probably placed the popped piece back in incorrectly, that happened to me and had to take it all apart and back together into a cube which was also absolute hell lol. so I would recommend it just because how fun it is to solve but the popping really discourages me from trying to solve it again, looks freaking awesome when solved though.

This was difficult, Not bad ootb, but as soon as I scrambled it, I regretted it, It took me 5 hours. But I learned that the turning quality was good, but I Found it difficult. Would reccomend, but no one knows what this is/

It came a little greasy ootb but just wipe the insides a little and it’s good to go. It turns very smoothly and is overall a great puzzle. I also got the blue with silver stickers so it looks amazing on my shelves.
It took me hours to figure this out—if you want to give yourself a challenge try solving this without a tutorial. My only complaints are a rare lockup and some of the stickers are not placed well, but these aren’t major problems, and you’re saving 20 bucks over the mefferts! I would say this cube is essential for every cube enthusiast, so what are you waiting for!

Turns well, but the stickers have quite poor placement and are low quality. Recommend taking the stickers off.

Accidentally scrambled it and I can't solve it now...
If you want a devious little cube that gives you a mind-twisting challenge, this is for you!

It is a good alternative if you can't buy the (almost) $40 Mefferts. It turns really well, but with the occasional lock up. I really like it