i don't cause merely i used steemit just for fun, if you click on me and check at my wallet you will see i haven't taken-transferred-stored a single $-Steem from what i have. Actually there are many good ones like Lisk,Neo,Stratis,Stellar but again as i mentioned i haven't invested at all so i am only offering a simplistic point of view but first you need to find a wallet and an exchanger that's for sure