NEO for sure because it was higher from the beginning
do you see the mk of NEO ? almost $1B!!
x50 would put NEO at the same level as BTC today. Seems like a stretch to me... I can be wrong... as always.
If you want x50 to x100 coins, that imply coins which are worth NOTHING today --> big risk of finding shitcoins and losing everything.
My suggestion: Look at coins with less than $10M market cap on coinmarketcap (below the top100... click on the "full list" menu... shit is always well hidden)
https://coinmarketcap.com/all/views/all/Then dig in the very long shitlist... and pick your "winners" based on their product, team, roadmap... and pray...
My favorites:DAR (awesome idea, lots of potential if it works)
PBT (great use case. Real estate is always a good thing)
SKIN (low market, but has a use case for video games. Better than all the rest, especially when I see my 10yo nephew playing video games all the time... and looking for skins etc...)
XBY (make up your own mind. I invested in FOMO mode...)
I am looking at FOOT: its miserably cheap... and may be pumped by inverstors soon. Maybe not a x50... but a good x10 possible.
Again, don't play 0.001BTC to this game: you need to put at least 0.2BTC in order to make decent money (=10BTC if x50)
Do the maths... have fun, and be ready to lose EVERYTHING. That is how you make x50... (or not!)