MFJS Meilong 6x6
The Meilong 6x6 is a great budget 6x6 cube from Moyu. It has frosted plastic which allows for more grip and also has great turning. The 6x6 is made by Moyu, a cubing company known for its performance and quality. This cube is great for learning how to solve bigger cubes.
While many believe that the 6x6 is easier to solve than the 7x7 as it has less pieces, it is actually harder to solve when you first start out. This is because the 6x6 does not have a center, whereas the 7x7 does. This results in more algorithms needed for the 6x6.
This inexpensive cube is very nicely made and works very smoothly. It should last forever.