I would say ARK, Siacoin, Syscoin and NXT/ARDR since they they will release an update begin july.
All are to expensive (except Siacoin) to buy big amounts of them.
What does the amount of coins have to do with anything?
Only for trading!
If you can buy 100.000 coins for $200 (like done by BTS for a while) and they would rise only 1 cent during a pump (which is extremely low - look at BTS how it rocket up from $0,00xxx to now $0,30!), you will make more profit ($1000) than buying 0.75 ETH when it rises only for $50. It depends on the amount of coins you have! Try Excel to calculate for yourself.