What recomended altcoin while grow faster like bitcoin or eth?
It is very hard to tell, but I would put my cards on NEO. Specially since it is becoming the Chinese Ethereum, and once it becomes mainstream, it will spread throughout the Asian Market quickly.
I will tell you two projects which will grow dramatically next years. The first one is NEO, Chinese alternative of Ethereum, and the second one is Tezos which is the American alternative of Russian Ethereum. These altcoins will be great within 2-3 yers. For long run, they should be in your buy spot.