I think it depends on your strategy (trading or holding). Currently, all altcoins have quite good prices, you can consider to buy them and ready to hold for a long term. On the other hand, you can do trading on these coins you have bought for holding; this is also one of good strategy.
For me, I expect that in next 1-2 years. All current altcoins could hit 10x-100x like altcoin history (i.e. NEO, ETH, DASH, STRAT, ....)