Bitcoin expansion of the dispute, preferably bitcoin core or bitcoin classic?

[feitebi.com]

The so-called special currency expansion dispute, that is, the development trend of bitcoin, bitcoin core pursuit of the main line is through the development of the second layer of agreements (such as side chains and lightning network) to achieve the expansion of bitcoin
   Short-term through the isolation verification program to achieve a limited expansion effect, but does not rule out the hard bifurcation of special currency blocks to expand.
   The line pursued by bitcoin classic is mainly for the adjustment of the blocks of Bitcoin, including the adjustment of block size, and the use of thin blocks (We blocks) and other programs to achieve the chain ( on-chain type of expansion,
   The route will also deploy a simplified version of the isolation verification scheme. What kind of development route will be more suitable for Bitcoin, bitcoin core or bitcoin classic?