I know a lot of these options exist, but I have a few unbreakable requirements.

1) not building it myself. I need off the shelf. I am lousy with a soldering iron.

2) it must have a dedicated F row. I do not care about layers and supposedly saved movement distance. I must always be able to mash F5 without any chording. Give me an F row + layers. The keys need to physically be there, my desk has plenty of “vertical” space to hold it.