I think that blackcoin is very good, it's price does not change much. But litecoin is looking to be best altcoin.
I agree about LTC

I was into Blackcoin for a while but i have moved on. I might get a chunk of BLK again soon and just put them away until I am rich.
Every altcoin wallet with tons of coins is another opportunity to make your future self very rich. The trick is to get a ton of whole coins when they are dirt cheap and then store them on a core wallet (the safest option). Then backup the private keys and put them onto a nice flash drive and put that into your safe and DO NOT TELL ANYONE ABOUT IT.
Then just stop following the coin value and only check the value like once every 6 months and try to hold out for huge profits. Don't be dumb and sell for just double your investment because some people did that with bitcoin when it was $3 and then hit $10...they sold but if they held...they would get hundreds of millions for those same coins at today's value.
Now try to do the above with many altcoins but you need to make sure the altcoin is legit. Most new coins these days are just copies and run by (to be honest) people like me...people that have some skills but no the real knowledge it takes to create a successful cryptocurrency and build a growing community that use the currency.
So one good tip I can give is to use this link to find the newest coins on the market:
https://coinmarketcap.com/new/ and then dont look at the names or logos...look at the coin stats. You want a "rare coin" because you don't want too many total coins (unless you want it to remain a "dirt cheap coin" like DOGE) so look for the lower supply coins first...then you need to do some research on the "coin's story" and check their site and bitcointalk announcement thread to see what people are saying about the coin. If you find what you feel is a good coin with a future, then invest and get a big chunk of whole coins (like 1,000 or 10,000 or more...depends on the current values) and do what i stated above about backing up your private keys from your core wallets and guard them with your life because one of those wallets just might be worth A BILLION DOLLARS in the future!
ok, so that's "my 2 cents" on the altcoin matter.
