Thanks for the replies everyone. Any suggestions for other coins? I've read that to get other coins (such as ripple if I remeber correctly) you have to transfer btc from coinbase, buy the alt on a separate exchange, and then trade it back to bitcoin and back to usd? I'm pretty confused about that whole process and it seems a little bit "risky" compared to the single-website platform of coinbase for btc and ltc. I've also heard that on those other exchanges you have to wait for a buyer as opposed to coinbase which is instant. Please educate me lol. Anyone have a suggestion for a particular  coin to invest my 500?

Thanks for the response. The one thing that makes me want to get more litecoin is the possibility that it would jump into the tens of thousands like bitcoin. Can anyone offer a logical explanation as to why that would be likely/unlikely?

Hey guys, about a week ago or so I purchased 1500$ worth of bitcoin and 500$ worth of litecoin. My 2000$ investment is now worth around 3k.. I'm pretty pleased with my results and I want to invest another 500 tonight, but not sure which one to get. I was gonna put it into litecoin to balance my portfolio out, but litecoin price has been pretty stagnant since that big jump from 150 to 300 (which I was lucky to catch the night before the jump) but bitcoin on the other hand seems to be on a steady rise. What do you guys think?