We’ve been here before of course and you may want to review this topic as well …
I’ve had a FT817 for 19 years and a KX2 for 3 years. I use the 817 now only for 2m SSB/CW. My KX2 and 2m/70cm FM/C4FM FT1D weigh about the same as the 817 [and I like the redundancy of having two radios]. I endorse the many excellent points already made by 817/KX2 owners above.
If I had to single out only one feature of the KX2, it’s the excellent [optional] internal ATU which loads up my 40/30/20 EFHW well on 60m, 17m, etc. Yes, I could take my two linked dipoles and spend ages setting them up [and maybe get marginally better Dx], but at my age I value quick deployment in winter [so my fingers aren’t already cold before I need to paddle properly].