I bought my KX3 - as a Kit
Battery Charger - I am still 50-50 about if this was a good option
Roofing filters - Worth every penny (or $ or OMR)
CW Key - Quite nice once you get used to it
I did not bother with
ATU - why ? You only have max 15 Watts - Tune your antenna !!!
Mic - I prefer CW
Horses for courses
Regards
Tim - A45WG, Muscat. Sultanate of Oman