There's more than one way to skin a cat.

I think this is more appropriate as it more explicitly relates to processes for achieving something instead of a more abstract comparison.

Definition:

There are many methods one may employ in achieving one's ends.

Used like so:

It looks like method A isn't available but there is more than one way to skin a cat.

There's more than one way to skin a cat.

I think this is more appropriate as it more explicitly relates to processes for achieving something instead of a more abstract comparison.

Definition:

There are many methods one may employ in achieving one's ends.

Used like so:

We can go with method A if you like but there is more than one way to skin a cat.