Where can I buy stronger crypto?

I'm curious, where exactly can I find and purchase stronger cryptocurrencies? Are there specific exchanges or platforms that specialize in offering a wider range of robust and potentially higher-yielding digital assets? Additionally, what factors should I consider when evaluating the strength of a cryptocurrency before making a purchase decision? Is it simply about market capitalization, or are there other indicators like transaction volume, adoption rate, or the team behind the project that I should take into account? I'm eager to diversify my portfolio and tap into the potential of more powerful crypto options, so any guidance would be greatly appreciated.