I've built 5 F1 cans; damned things can be a bit addictive. If you're handy and can use a calculator, you can do your own and skip the kits. That opens you up to using the best cones, such as those from Dino Precision and Pure Performance Armory. Otherwise, I'd go with a White Trash Tactical kit.
Personally, I've always built mine from scratch. Three have Dino cones, one has mushroom baffles, and the other has cones that aren't so great. One Dino can lives on my HD 300BLK SBR; loudest thing, from the shooter's perspective, is the gun cycling. Similar designs have tested out at 120 dB. I've got an 8.5" Dino can that I use with my 6.5 CM bolt gun. Every time I take it to a group practice at my club, no less than three people come over and ask the brand, because they can't believe how quiet it is.
If you're serious about building, head to form1suppressors.net and definitely subscribe to Silencerstudent on the Tube or his Patreon.