Yeah PorkBun is a really good registrar, I've the three domains for my project from them (.com, .net, .org) and I must say my experience has been awesome. They're really cheap, the three domains cost me less than $15 for the first year, instructions are easy, setting up DNSSEC with CloudFlare is a piece of cake, and the UI in general is very appealing. They also have decent support staff, I got a reply to my ticket with few questions very quickly.
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Honey ... yeah the .tech offer is pending to be claimed by me too, but on another note. the renewal cost of .tech is a bit too much, at least for me, I wouldn't spare so much for a domain whose renewal price is more than twice the sum of registering plus renewing a domain at PorkBun. However, the first year offer is good for those who do not have an immediate capital, and are gonna migrate to another TLD afterwards, or someone with too much money.