Why search for coins. You can try bitcoin itself. And if you want to be so badly into alts then you can go on exchanges and click the top traded coins section. Many of them will show some similar coins you can take them as best coins in the market. Check for the volume traded in last 24 hours. This gives you clear cut idea what that coin can do in next day.
You're right ,however bitcoins is given and many of us wants to trade other coins .
If you want a long term investment go for eth. If i want a day trade i choose those coins who have a big volume and price is cheap
ETH is good but make sure not to buy at dip .It is right choice to trade with high volumes because of its high volatility .you can make profit with those ups and downs in the market.