I have an antminer s9 and an antminer s9j, I would like to know which is the best pool I can put them in to have the best performance
best performance is a hard question to answer.
viabtc.com. set to pps+ pays 17 cent a th or 0.00000436 btc x 28th = 0.00012208 btc a day / $4.76 set auto withdrawal to 0.0001 and you will get payment every 9 or 10 days
https://www.viabtc.com/signup?refer=257609my referral code above
or got to
https://www.viabtc.comno referral
do I think it is your best choice
if you want a regular payout yes it is.
if you want to get rich mine at ck solo pool
https://bitcointalk.org/index.php?topic=5237323.0or try kano solo pool
https://bitcointalk.org/index.php?topic=789369.0solo mining is all or nothing and would take you decades to catch a pool so $0. for 30 years is the likely income . But if you get lucky and hit a block for 6 coins = over $229,000 in under a day . very very very unlikely