AR15 Lower Kit Recommendations

I am borrowing a friend's Complete AR15 to use in testing and printing a lower for myself in the future. What lower kit does guncad recommend? I like the look of some of the PSA kits, and am thinking of shopping there.

I am new to AR15s but I successfully completed a PMC9 that is a lot of fun! Used PA6-CF and that's what I plan to use on this project. Just getting into the community and would love all recommendations.