My invest currently:

Redpulse
Electroneum
Deepbrainchain
HIVE
InvesFeed
Storm
Icon

UNIFY
moved from POW to POS 2 months ago.
up 400% this month
MAX supply of only 19 million coins.
current price-0.1 $
my opinion 10$ by 2019.190 market cap.not big deal.that 100X your investments
working now to get listed at bittrex and cex.io.so when they do,i belive it will explode.
big community.join telegram group for more information
https://t.me/joinchat/FYtJO0Ls6GxxJSvdXxjIeQ

RUPX also good

Ethereum Yes, but Deeponion me cringe I can never force myself to buy it, although I participated in the airdrop. Something is wrong with this coin, but this is my personal opinion

I'd say NEO, PIVX, STRAT. These are my top altcoins. NEO is going to skyrocket in 2018, imo. A lot of development is going. PIVX is privacy coin, PoS. 2018 will be definitely year of STRAT. Just check their roadmap many features coming next year.

Ripple, Ethereum, Etherum Classic!!!

My vote would be on Litecoin LTC and Monero XMR.

LTC is the conceived as the silver to bitcoin’s gold. Created by former Google employee, Charlie Lee, LTC will be an everyday coin so it will have a more mainstream use.
On the other hand, XMR much like bitcoin, Montero's creator is anonymous. With Monero, the details of every transaction, including sender, receiver and size, are recorded on a public ledger, but are obfuscated to reportedly make them untraceable. Animosity simple appeals to many.

In my opinion, GVT  and ADA are two good altcoins to invest in.
especially GVT has lower price, if we consider its expectations.

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What is mobilink?

WEBSITE : https://mobilink.io
WHITE PAPER : https://mobilink.io/Mobilink-Whitepaper.pdf
REFERRAL : https://mobilink.io/dashboard/signup.php
COINTELEGRAPH: https://cointelegraph.com/press-releases/biggest-ico-ever-mobilink-coming-soon-jan-2018
TELEGRAPH : https://www.t.me/mobilinkcoin

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For more information check our website and whitepaper 
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bitcointalk account: https://bt.irlbtc.com/view/2614818.msg26607277#msg26607277
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Why not invest in some ICO? Since you want to get some big returns, you should invest in some ICO, and the return on investment ICO may be far greater than investing in altcoin