I have 2.3eth and I would like to ask if i should hold my eth or buy 21 NEO. I also have ADA|BTC|XLM should I invest more in those also or just go for one full investment
If you did that trade your 21 NEO would be worth 1.4 ETH. Both Coins have lost a lot of value is USD since you posed this question. ETH has performed better because even though ICO markets are in the tank it is still the undisputed King Of ICO's. When markets recover I believe that it will also out perform NEO to the upside. NEO still needs to find itself a compelling use case.