I used PNNV when the PREEV domain was off but now that they are back online I voted for it, even though Preev is in second place in this poll I still think its the most popular Bitcoin converter there is, because it's the oldest converter, and many have used it and it became their reference for many years I've been using it for 5 years already.

Checking Preev on whois the admin extended it up to 2025.

PNNV.com has become my go to website when I need to check BTC price. In addition, I'm using their instant swap services which can be another reason for using the website.
Preev is definitely a great option but let me be honest. I prefer using pnnv because this is a community made wesbite (agentf) and we should encourage him. He is spending money to advertise the site despite not monetizing the website.