Nvst had a lot of noise at one point. I think it became one of the promising altcoins around, Kucoin, on the other hand, doesn't have much news and attention to it, so I am not sure with that. However, if you are speaking of short term investment, I think LTC and Ripple would be better choices since they are gaining a lot of mentions and noise in the market right now. Many people are projecting them to reach better valuation in the next few months to come.