What do you mean with 9 days and 1 day.
What is the diferent betwen solo pools viabtc vs. ckpool vs. solomining ?
I don't think there's a difference between them are you talking about solo mining with your node? Then it's not worth it if you only have one unit and unstable internet because the block you found might become an orphan.
Mining solo on both mining pools only takes 2% of the block reward that you mine plus transaction fees.