Now before everyone starts questioning these picks, understand my reasoning behind these picks and who this is intended for. This is intended for someone who is relatively hands off with the market. If you are very active with trading then you'll probably be focusing on technical analysis more then fundamental analysis anyway.
I chose these following coins as strong and safe coin picks for April. We are nearing the possible end of a bear market and from my experience it is the large cap coins that follow suit to Bitcoins market cap gains first. Then come the mid caps. Then come the micro caps. Obviously number one coin to hold is Bitcoin! Its the Microsoft of the Cryptocurrency industry. Here are my picks; all coins have strong foundations, great dev teams, big following and high market caps, and are at very attractive prices from there ATH (all time highs).
Litecoin
Making partnerships with several big merchants and now released Litecoin will be used as "LitePay". This could be the mass adopted version of what Bitcoin was "supposed" to be. I recently watched a podcast with Charlie Lee and he had mentioned that Bitcoin simply will not be the coin for everyone. Although it will be a great coin and Segwit/Lightning network will make transactions cheaper it just wont compare to Litecoin. Whether BTC will be used as macro transactions and LTC will be used for all micro transactions; only time will tell.
NEO
Neo is the little cousin to Ethereum. Neo has several ICO's building on its Neo Platform. And although similar to Ethereum; it focuses in on a specific goal: Smart Economy. Neo also just sponsored the largest Cryptocurrency convention last month and reached ATH. I've read some FUD on Neo saying its not PoW or PoS and all of a sudden has a bad rep. However this has not been any different since day one. If anything the fundamentals are all intact and hope this FUD allowed you to pickup NEO for a bargain!
DASH
With a low max coin supply, and an incredibly professional marketing and development team; Dash is set up for 2018 success. Need an example? It had just aired a one minute commercial on a united states flight on all of the overhead TV's in the seats.
0x
Decentralized Exchanges... This would change the worries of centralized exchanges having security breaches and losing funds! This is an Ethereum Based Token that was just released for Trading on Bittrex on Feb 15th!
ICON
ICON reached ATH just before the bear market as it hosted a cryptocurrency conference. ICON intends to build the largest decentralized network in the world. This makes for a massive market cap potential.
Ethereum
Ethereum has several hundred coins built on its platform. In order for any one of those coins to be successful, Ethereum needs to survive! It will be around for a long time to come!