I'm still not sure which way to go with this. I see no info (apart from their website) from Powerlabs. ISDT T8 looks OK and the iCharger 308/406 seem to be standard for everyone.

PL6T is really nice and does 30A single channel and has an 'app' and lots of data collection/monitoring options (i like this!) Re-gen discharging or 8A. no-one crows about how great they are (for what it's worth)

ISDT will do 30A single channel and is cheap (and can be calibrated)

iCharger will do 30/40A dual channel, and sync mode for discharge. PC link and lot's of users say how much they like them.

Pretty confused right now as to which way to go.