I thought the photo taken below was sort of cool.  My KF4D on the bottom, and my K1 on the top!  I built the K1 as a 2-band kit near the end of its availability back in 2016.  I haven’t used it much, it was mostly just a fun kit building experience.

Yesterday I got it out of its box and made a couple of contacts.  Not that I’d forgotten how challenging it is to make QRP contacts, but I certainly wasn’t used to waiting in a pileup for dozens of calls anymore.  Still, it was nice to make a few POTA K-10000+ contacts on low power.