Just wrapped up a week-long camping trip where I took both my Xiegu X5105 and Elecraft KX2 for some serious side-by-side testing during POTA activations. Thought I'd share my real-world observations.

Battery life: The X5105's internal battery lasted about 4 hours of mixed CW/SSB operation, while the KX2 with external 18650 pack went almost 7 hours. Both at 5W output.

Receiver performance: KX2 definitely has better weak signal reception, especially in crowded band conditions. The X5105 waterfall display is nice but can be a power drain.

Build quality feels solid on both, though the KX2's controls have that premium feel. For the price difference though, the X5105 offers incredible value - especially with its built-in antenna tuner working so well with my random wire.

Great comparison! I've been torn between these two. How did the X5105's CAT control work with logging software during activations? That's been a deciding factor for me.

Interesting on the battery life difference. I get similar results with my KX2 setup. Did you try the X5105 with external power? The DC efficiency might be better than running off internal battery.

Both solid choices! For newcomers reading this - either radio will get you on the air and making contacts. Don't get paralyzed by analysis. The best QRP rig is the one you actually take to the field and use. 73!