What do you mean Use Cases vs Philosophical Tech, and why do you choose Use Cases?
I checked out NEO, there's a Gartley on the daily, meaning if it goes down to D point, then it would be a Buy, provided some other indications, (candlesticks, RSI, etc) 
These are phrases I guess I have defined in my mind.
Philosophical tech are interesting ideas for technology without any implementation or maybe not even thought about implementation.
Tech that is in development should have what is called a 'use case' - or a situation where the tech would actually be useful! Currently steem has one of the best use cases through the steemit and other condenser platforms. Etherium, neo, musicoin, litecoin etc these are coins with use cases, that is they are usable to do stuff in the real world.
Whenever a coin without a use case goes up, I am sure it will come back down. Whenever a coin with a solid use case and community goes down, Im pretty sure it will go back up.
In my humbe opinion the use case of bitcoin has been getting weaker - the only case it has left are for huge transactions and transfers several bitcoins and higher. Bitcoin is now the rich mans coin, in terms of use case.
I hope I have explained my thinking on crypto/altcoin investing - its nice chatting with you!