Which of the leading cryptocurrencies will become more scalable and efficient in the long term?
Will it be Bitcoin with its Layer Two solutions such as the Lightning Network and Sidechains?
Or Bitcoin Cash with its on-chain scaling solutions by increasing the block size limit?
I would like to know your thoughts about this.

i thought this kind of topic was probihibited here, well actually i dont know the answer i dont even use bitcoin cash. but bitcoin now has a development it was fast and low fees in transaction.