I would choose ETH over others as it's one of the best coin for long/mid term investment. I have a feeling that it would go upto 2k by the end of this year.
My opinion is that there is no point in investing in Bitcoin or ETH, I would rather invest in cheap tokens that can be purchased during ICO. For example: the same OPP Open Wi-Fi, this token can bring significant gains over 2-5 months.