It always depends. You don't really know which coin is the next hit. Some people are doing trading from coin to coin to make some money, but you really gotta be experienced to do this. I like to follow the trending coins, which is getting a lot of attention lately.
This is true, trending tokens have a lot of potential but there are a lot of small projects which are worth attention. Not saying we should invest to PotCoin or CannabisCoin (are these good, by the way?) but I think it's a good practice to just keep searching and assessing