I'm still buying altcoins now. This is a very good time for us to buy and hold altcoins. Currently the market is in the process of stability and development, the price of altcoins is still very cheap. I am buying Ethereum, Tether, EOS and Monero. These are stable and potential altcoins. I believe that buying and holding these altcoins in the long run will bring us a lot of profits.
It's easy to find good altcoins now as the market dominance is very low and we can see there are only few good coins who are still surviving with still a good trading volume. All the altcoins you mentioned are actually a high volume coins which for sure will easily rise again once altcoins market starts to be bullish again, for now, the struggle continues but they are still holding on, so a big bounce back is expected to happen.