Every year, for my son's birthday, he gets that size/number cube and this year, he turned 11, so we decided on this 11x11x11 because it was magnetic, squared, and small enough to manage for small hands. He says it turns great and the grip is a bit different because the corners and edge pieces are slightly concaved within the pieces themselves. So far, its a pretty awesome cube and he's already solved it 3 times in the 24 hours that he's had it, solving it in 28m 50s!! He also did a pretty cool superflip pattern on it! Overall, he gives it 2 thumbs up!!

This puzzle turns pretty decently out of the box, and even better after a few solves and lots of lube (I used DNM-37).
The size of this cube is great. It's small enough to where algorithms are possible through muscle memory (though I do have slightly larger hands). This small size also means it's not necessary to table the cube to keep layers in alignment. It's also light and not too straining on the hands during a full solve.
The magnets also help a bit with layer alignment, though they do not eliminate misalignments & locking completely. This is because the magnets aren't quite strong enough to keep the layers snapped together. Due to this issue, this is not really a puzzle that can be speed solved without paying close attention to allignment.
If an 11x11 SPEED CUBE is what you are looking for, I don't think this hits the mark quite yet. But if you're looking for the nicest feeling and most fun 11x11 currently available, this one is hard to beat.

I got the Galaxy 8x8 and 9x9 and was really happy with them. I decided to skip the 10x10. I figured the 11x11 would be a little clunky and not that smooth to solve. But after only adding a little lube I believe the 11x11 feels better than the 9x9. I don’t know how that’s possible. But that’s just how impressed I am with the stability, turning, and overall feeling. The magnet strength is really nice. Strong enough to keep cube shape. But east enough to make centers and pair edges. The only downside is the cube has a tendency to pop when solving at higher turning speeds. That’s my inaccuracy with turning. And I wish it wasn’t as easy to get a pop. But honestly that’s my only complaint with the cube. It is pretty easy to fix the cube after it pops. So that adds a few points. It would be a 9-10. But instead I’ll give it a 9.3/10.

Good turning

This cube is a lot of fun. This is my first time with a cube this size, but from what I can tell this cube is premium quality. The magnets help with aligning, though you won't be speedsolving this thing. It's also quite small so it fits in your hands easily. If you really want an 11x11, I can't say if this is the best price value. But it's probably the smoothest and sturdiest one.

Magnets are not nearly strong enough for speedsolving. Size is great and turns good for casual solving but too many lockups with the weak magnets.

I’m a little disappointed, the magnets are a little bit weak, and it pops and locks easily, so you have to be very careful with it, for this price i expected a bit better. But it’s fun.

Very impressive cube.

Love this cube great for my collection!

THIS THING IS MAD SMOOTH! I HAVE 100 RUBIK'S CUBES AND THIS IS HANDS DOWN MY FAVORITE. NO QUESTIONS ASKED.
(btw i purchased this on a different email)