If I was a trading insider then I would suggest my clients to research their own because for me values are far more important than price. I would never compromise my credibility just for the sake of profits and even if I knew some news that would push market price up for a particular coin then I would refrain from purchasing it and the reason is same as quoted above.
you have made a nice suggestions for the op. I will also advice the op to lean arbitrage trade;Arbitrage tends to work best during periods of high volatility. Its much faster to send bitcoin and altcoins between exchanges than it is to send fiat. Its also possible to arbitrage by watching the dominant exchange thats the market mover.