I bought the full set of Pragmata Pro on sale, but I also really like Iosevka.
If you like the style (slender/condensed), both are very appealing.
Pragmata Pro is several notches above in overall quality IMHO. Hand-hinting at smaller sizes makes a world of difference if this is important to you. This means you can use the same font from low-res console to a 4k monitor and will consistently look wonderful.
At higher DPI settings, Pragmata has a more cohesive sense of style. This is hard to quantify as it's quite subjective, but as pixel-perfect issues go away, the overall artistic direction start to become very important IMHO. The fact that this is done by a single individual shows in both little details and overall direction.
I'm not trying to push Pragmata, I just want to say that I think the price is fully justified and absolutely worth it. The work that went into the fontset is absolutely huge.
And as I said before, I also like Iosevka. Wonderful effort as well. It's slightly less packed, which I'm not super-fond of, and I find it only really shines if you have a high-DPI monitor. I use the different stylistic sets in my editor to subtly highlight different keywords.
I bought this on sale years ago, and I really do adore it. The narrow-but-tall design means it optimizes for number of characters per line at the expense of fewer lines displayed at once, which IMO is a fine tradeoff since our tools tend to handle vertical overflow (via scrolling) better than horizontal overflow (via wrapping). That said, I'm sure you can find a free font with similar metrics.
I will also say that I've had a great experience with the developer of the font. I once noticed a bug in one of the glyphs, and within a week of reporting it he had acknowledged it, fixed it, and pushed a new release.
https://fsd.it/shop/fonts/pragmatapro/