Superb, didn’t realise it would be the C2-6000. Just ordered for £0.33! 
Thanks very much, Leo!
Jan 27, 2018: New discount scheme in MiBoxer’s Amazon store:
Buy C2 4000 20% OFF with this code 9O8KP5XM (https://www.amazon.com/DP/B073QJ1TSN (link is external))
Buy C2 3000 14% OFF with this code 99IC5E8U (https://www.amazon.com/dp/B073QKJY19 (link is external))
Buy C2 6000 19% OFF with this code 4HEK45DA (http://www.miboxer.com/eng/p5.html (link is external))
It’s a good thing, this drawing. Exposure is everything. And what a better place to spread the word from.
Congrats to all winners!
waiting for code on aliexpress
Received my C2-6000 today - it’s the most advanced charger that I’ve got, and I’m really looking forward to trying out all its functions. Currently charging 2x Keeppower 26650 5200mAh.
Thanks, Tatasal & Leo!
Finally got a chance to play with my C4-12! Photos and thoughts in this thread.
Cannot believe how smooth the negative sliders are compared to all the other chargers I own. Wide voltage power brick (100-240V) means this one can come traveling with me.
I’m enjoying the auto current selection, makes life simple!
Thanks!