Despite recent volatility in the crypto markets, Bitcoin (CRYPTO: BTC) and Ethereum (CRYPTO: ETH) remain two of the best-performing large-market-cap cryptos. For the year, Bitcoin is now up 65% while Ethereum is up 40%. 

Based on recent performance, Bitcoin would seem to be the obvious better buy. But just remember -- past performance is no guarantee of future performance. If you are a long-term investor, you need to keep your eye on future developments as well. With that in mind, there are three key factors that could determine which crypto is the better buy over the long haul.

The most important factor remains the flow of institutional money into the crypto asset class. Currently, Bitcoin appears to have a massive edge over Ethereum, with many institutional investors viewing it as a "safe haven" asset that can protect them from volatility in the broader market. We saw this scenario play itself out earlier this year, when a regional banking crisis in the U.S. immediately led to a flow of new money into Bitcoin, which in turn led to rapid price gains.

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Source Fool.com