Hello everyone. What is the best pool for RVN?

I use minepool for two days, but I'm not sure if I'm undermining well.

I have these values ​​right now.

Summary   Miners   Shares   Hashrate*   Reject*
x16r   1   0.0002%   257.7 kh/s   

Details   Extra   Algo   Diff   ES**   Hashrate*   Reject*
cpuminer-multi/1.3.3   c=RVN   x16r   0.5      257.7 kh/s

Thank you all.