If you're looking for a candidate that could par bitcoin, then the nearest answer to that would be Ethereum. I picked it judging on the highest marketcap in next to bitcoin and the usage.
On our local online exchanger, ethereum have already its own way for converting directly to our fiat. It doesn't depend now to bitcoin in cashing out 

As for the price, I think it is not because altcoins are dependent to bitcoin but it is about their same type. Both are cryptocurrencies and either of the two will be favored out in a time.