Initially invented in 1974 and popularised in the early 1980s, the 3x3 is probably the most famous puzzle in history, it has 43,252,003,274,489,856,000 possible combinations meaning the odds of a random scramble ever being seen before by anyone are around the odds of winning the national lottery. Nevertheless, the best speedcubers can easily solve it in under 10 seconds every time. I have a wide range of modern 3x3x3 speedcubes, lots of great work has been done to improve the design of these cubes, if you have an old cube then you will be very impressed with the performance of almost any of these cubes.