IMO, its always good to add to and hold your BTC and ETH balances. I sell rarely. Aside from that, NEO is a good hold. NEO is looking like it will be the next big thing. OMG is another that looks liker a hodler. SC is a long term hodl.
I worry about all the Wu-coin's (BCC/NEO), that guy is a liability. His money is good for the pump, but watch out for the dump. I'm pretty sure he just sat on Bittrex buying BCC for any price most of the day two days ago and that created a big bump. The buys didn't seem rational to me, like someone was just clearing out the first two pages of sell offers so it will create the appearance of increase in value, even though given time to stabiliize, the value would never sustain the levels it did during this massive shoveling of money. He's the only one with a stake that could profit from a maneuver like that, since he makes his money on the use of the coin, not it's actual value. If he can make mining BCC look profitable, that's a win to him even at massive expense. So torching a bunch of BTC to inflate that value pays off for him in the long run even if it cost him a lot to do. Neo is probably next, but the second he turns off the water-hose of money, it will deflate substantially.
