ARK has yet to have a real moon mission. It will come in the next weeks/months.

Golem, Ark, ZRX, and finally Ethereum, that is a beautiful portfolio for making more than 3x in matter of months. If i had more than 10k right now, i would diversify it all on those coins that i have mentioned. But unfortunately i have my money on other coins, so i am not able to invest anymore.
But with those altcoins your profit would be huge, because you are investing in short term and long term.

ADK, IXT, TNT

I like TNT
Pretty cheap atm

HUSH is worth giving a look at too

And if we have good news from China: NEO+GAS and QTUM will raise a lot.

The problem is that a lot of people invested in the Tezos ico and the last time I checked the price went up even more, so while you could invest in that coin I think the earnings are going to be limited since it was one of the most successful icos ever, so while the opportunity to earn money is there I think there may be other projects that could get you a better return on investment.

What goals in your opinion can be called great?

arctic  ARC might be the one with a lot of gain potential ... but electroneum is yet to come ... we'll see

For me, it's ETH, BTC and Waves.

I think Aventus is a good long-term investment because they have been officially listed on Bitfinex and this will make Aventus go to the moon in the future and will be very high price for a long time stable.