Aside from bitcoin, there is no other crypto that can considered as "advisable" to invest in since other alts can't reached what is the price b behaviour status of bitcoin today. Yes there will be probably other alts that can established a good price but for me I don't considered that as enough basis to think that a certain alt will share it's value from bitcoin.

Advices might harm you since altcoin investment is really risky even with a crypto that has a good promise of developments in the future. Even looking at those top crypto at coinmarket.com or any related site won't help since "advice" must be come with a good output. What you must do is to play with the alts instead. Test and put a small amount and see how far it will goes and check the outputs. Other traders also participate in an ICO where profits are come and go. Some able to ride the pump but others aren't. This is how altcoin trades work, playing with the risk.

Anyways you didn't come back yet to check this concern of yours.