For payments and moving funds the stablecoins are definately best ones.
Bitcoin is one of the best payment to this date. The fee for each transfer isn't costly anymore unlike way back years ago. It's not the same anymore that you're going to get stuck in the network even if you pay that much fee.
Bitcoin is mainly an investment asset now. It is not very widely used for payment, ...
I still use bitcoin as a payment method. Although, not as often as I used to. I still use it from time to time. Other altcoins have not yet reached the same level as bitcoin.
It's still good as both, an asset to hold and as well as payment. But the main use of bitcoin in particular is a payment. For some in the market that trades daily, it's the pair that they would rely on.