Since you have few 100 coins with such high volume and for sure you can find many good one among those few 100.
How many of those 100 coins have a few TH/s worth of mining support?Two days ago, Acoin's network hash was 20 TH/s , that's more than ETH Classic, Zcash, or Monero for example.
Where do you think those miners will redirect their Mining Rigs hash power when Bitcoin mining will become less profitable?It'll go to other SHA-256 coins
Acoin is a good eventuality buy, you don't need too much money to risk, but the reward can be huge.Low market cap coins can bring you collosal profit if things go up, and that's why it's always a good idea to collect some of them, because you never know what happens.
Think that last year, Viacoin and Vertcoin were two apparently forgotten SHA-256 coins with low volume, and look at them now.
Heck, Terracoin was something like 0.002$ last year, 50 bucks would've got you something like 25000 units, and now there's active development and we're looking into a 1$ per unit perspective for Terracoin.