hub20 VS 0xBTCpay

BTCPayServer is very good, but it can not accept payments in the Ethereum network. If you want to accept stabletokens (which seems to be the case since you don't want to necessarily hold crypto as an investment, so stable tokens can help you to avoid volatility), you will certainly want to be able to accept ERC20 tokens. I'd recommend you take a look at Hub20 [0], which I've been working for a while and it aims to be the Ethereum analog to BTCPayServer. Currently Hub20 is also integrating with Raiden Network[1], which works in a similar way to BTC's Lightning (but again has the advantage that it can work with any erc20 token, so you can transact with stable tokens if you wish)

Hub20 is self-hosted, so you control all the keys. I am also working on a checkout system[2] so that people can accept payments from their site in a similar way to Stripe.

I've been working to turn Hub20 into my full-time project recently, I'm always on the Matrix room [3] for any kind of support. I'm also open to consulting in the domain.

[0] https://hub20.io

[1] https://raiden.network

[2] https://gitlab.com/mushroomlabs/hub20/checkout20

[3] https://matrix.to/#/#hub20:communick.com