I think Miner One is the best ICO in 2018 because it is offering the most advanced mining equipment at a very low cost in the electricity and therefore it is leading towards the profit for all users.
Yes, it is the best time for investing in Litecoin. Time does not needs to be taken into consideration while mining any cryptocurrency. There is no season for mining of cryptocurrency. The trend of mining is increasing day by day on large pay scale along with wide varieties of available features and procedures. Though, it is my personal view, you should research again before investing.
These are some of the best Altcoins (having great technologies behind) which are currently under $1 : Ripple - The 3rd largest crypto currency. IOTA - The 5th largest crypto currency right now. NEM - The 8th largest crypto currency.