Litecoin is great right now because you can mine it with GPUs, so anyone can easily hop in!
I plan on mining some Litecoins, waiting for the exchange rate to BTC to go up, and then trading for some BTC, an keeping some LTC to stay diversified.
I am planning on buying some share on an ASIC and maybe I will actually trade some BTC for LTC, as I think the gap will shrink closer to that 25% level.