some ppl say buy litecoin as it will go up alot in next few months, i'm personally buying bitcoin for earned steem ( cents for now ) on bittrex and holding it at least til next year,possibly longer. poloniex had issues for few weeks not allowing any steem or sbd transactions for some reasons. i guess it has something to do with hf19. steem is cheap, i would sell doge for steem now, but i'm not a trader. but dogecoin - even if i own 1oz silver coin dogecoin - it have no future use except for tipping. bitcoin will be cheap til end of july as segwit is implemented on 1st of august. make sure you have your btc offline. exodus wallet would do or even simple electrum wallet. check jsnip4, bixweir and clif high videos. every transaction takes a little off your chunk so think them well thru. i'm no expert at all, relatively new to cryptos and that's only a few insights i wanted2share. Good luck and have fun with it :)