Here we go
1 BTC - cause its real deal. I think its kind of most useful coin and its ETF for all other stuff
2 ETH - same as BTC. No clue but need to have it.
3 LTC - some times it has his moments in lending. Plus if transactoin cost 0.01 of currency, its better be cheep currency
4 ZEC - im always for anonymity
5 CLAM - very good lending on Poloniex
6 Stratis - investing in casinos looks nice
7 DeepOnion - im in airdrop so what the hell
Planing to buy
NEO - cause its chinese thingy, i think they will form they own market at some time
DASH - Cause diversify
1. BTC : yes its worth to hold for really long time
2. ETH : its good because many more ICO will be hosted on top of it in future too
3. LTC : nothing different than bitcoin with less community support and demand
4. ZEC - I also love anonymity
5, 6, 7 : I don't know any shit about them so not holding any of them at the moment.
NEO, WAVES and LISK like platforms can be really big in future so its better to buy and hold them for few years.