I bought this because this was a bundle of 4 nice cubes I would eventually want to learn. Pyramix was great! Learned how to solve it the day after the bundle arrived! Square-1 was also pretty good! But very hard to solve lol, couldn't even fix it with a tutorial on my side. Megaminx was nice but kinda slow, so I applied some Stardust lubricant and it got faster! Skewb was pretty good, but I'd say it's good for beginners since I already knew how to solve that one! So overall the cubes were awesome and if you have the money, you should definitely get this bundle if you don't have them already!