I know many will say the time ended, we must have bought before 15 days but I think this is the best time. Before couple of weeks ago, BTC was around $4k and which is why altcoins are overpriced in term of BTC. Now that BTC has gained price, altcoins price has decreased in term of BTC and now is the best time to pick your favorite altcoin because right after the BTC ride, altcoin will also follow the trend.
Agreed, its time to pick the best altcoin because soon as bull run will commence and all altcoins will be rise from the ground. Its need to be patience atleast so that you will be granted best profit in the future.