I wish you all the best with your choices even I don't understand why are you excluding coins because of security issues that You even don/t know and just guessing? Like Steem, did you know if you held your Steempower in the wallet that even when you get hacked it is not available to withdraw for the next 7 days. You have plenty of time to react to a hack and there is also a official Account Recovery Service from Steemit. I'm just saying if you exclude coins from your list without even knowing the details of security issues you probably come to wrong conclusion and will miss out on great opportunities.