Electrocompaniet amps

I’m intrigued by these amps but when you look at their back catalogue there is a confusing array of different models. I’m wondering if there are any of the older models that stand out or indeed ones that should be avoided - any Electro experts out there care to comment?
 
Both excellent thanks Ian as I hope both you and your wife are also keeping well.
Since I saw you I have managed to have my Bonsai NX amp repaired...it is very good
whilst I have acquired a KX2 which - is dare I say - absolutely brilliant. Using them with my
Salas mesmerise version of the Pass BI.
 
We are both good thanks Brian. I’ve read up on the KX2 and it looks really interesting. Coincidentally minimising TIM seems to be a common design goal of both Electrocompaniet amps and Andrew’s CFA amps.

Did you make it yourself?