According to this site, BTC is more profitable.
https://www.fork.lol/Here
https://cash.coin.dance/blocks you can see all the recent blocks that have been mined on BCH chain. My thoughts are that you want to mine on the pools that mine the most blocks to get a more stable payouts.
This one shows all the BTC pools. I would not suggest anything owned by Bitmain, as they don't need anymore of our money. I love Slushpool! They have a great iphone app and they are very open on all of their data.
https://blockchain.info/pools
