I usually wait for thing to go down. I bought ETH after it hit $400. I thought I got a deal at $350 :(
Oh the list of the coins suddenly exploded that I did not buy
EOS, ANTSHARES, LISK . Veritaseum & Bitshares. How many of them were below DOGECOIN in marketcap a month ago ?
At least my Litecoin buy paid off :)