CockpitBob de RadioRay BT
For me, zero question, go for the KX2. It has a SUPERB receiver for all of my HF uses: ham, SWL and even for monitoring the HF marine activities. The transmitter - at ten Watts maximum - is more than enough for most CW and much digital. SSB reports, on HF nets, using the INTERNAL micropohone have all been quite good - with the receiving end being amazed that I was ten Watts SSB and not using an external mic. On CW, I do not know that it can be beat - ounce for ounce.
I REALLY recommend the internal antenna coupler, because that allows you to use almost anything as an antenna for field expedient comms (as you mentioned) without the additional cables, power and connector requirements, which are all vectors for damage in all but ham shack environments: I call that "BOOT BAIT" and usually ends badly. You can always use external gadgets if you chooce, by by-passing the internal ATU using a simple command in the menu.
The internal batteries are great and make this a 'single box solution'. I have two Elecraft internal batteries and one off-brand, all of which charge using the Elecraft charger. Yes, there are after market chargers, and they might be as good, but I TRUST Elecraft engineering for the long term reliability far more than Ebay 'discount' chargers. (buy once and cry once). As a supplement, I have a LiFePo2 4.5 A/H pack from Bioenno that can charge from almost any "12v" solar panel, due to the INTERNAL Battery protection circuit in the battery cover that protects against over and under voltage. Yes, whenever possible, I use the Bioenno charger, but it's nice to know that, should I
NEED to charge directly from my small solar panel - unregulated- I have the ability to do it, though more carefully. I have solar/deep cycle with AC pure sinewave inverter in the camper-van, so can recharge anywhere I am parked and be good for many weeks of skeds, or several days of continuous hobby hamming- being less mobile than I used to be ;-) the van is my 'camping' these days.
Mine is in a Sigg aluminum case along with essential accessories, (click on attachment) lined with scrap conductive foam. As a complete system, this Sigg case goes into a mid-small sized Pelican for all accessories, including chargers, straight key, antenna kit, a third LiPo battery and the Bioenno pack. This means, impact, environmental and Faraday protection in something with about the same cubic displacement as this smallish Pelican case. Naturally, you don't need all of this for backpacking or for a few days in the woods - you can pare it down to the Sigg case and wire. However, this is a
ONE-GRAB -SOLUTION to HF communications, so I keep it packed that way.

The Pelican outer case means that even if I tossed it overboard, I could use it once retrieved - no problem.
Remember, when the external battery pack is connected, you operate from IT automatically, unless it's voltage drops below the internal pack. Save the internal pack as your 'electron lifeboat' in case you're down to the last ability to operate.
>>> Remember too, that this radio will operate CW, voice, PSK/RTTY with NO ACCESSORIES. You can send/receive PSK31/RTTY using the paddles and the display: no computer needed to communicate with the 'Morse Impaired'. haha aha haaaa
My KX2 is my dream radio. 2 meters should be separate, so that you can listen to tactical/area radio-comms, while operating HF at the same time.
BT
>RadioRay ..._ ._