Chopin: etudes op 10 or etudes op 25?

[jsen]

Which complete set of etudes you think is more difficulty to perform? op 10 or op 25?

[awesom_o]

It depends on which set you are more familiar with.

If you are equally familiar with both sets, then both are equally difficult. 

Each opus takes quite a while to master, and most people can only realistically master one opus at a time.

So if you master op. 10 first, op. 25 will be more difficult, and vice versa.

[pianoman8]

It really depends on the person, they are both extremely difficult