Glad to see the enthusiasm for the kamry, I've been using the old model for about 9 months and for me they are the perfect cigalike, no fuss, no muss.
I'm happy to use boxes in the house (smokjoy air50+le magister clone) but I wouldn't be seen dead outside with one.
1 battery failed after about 3 months but the other is still going strong. coils last well, no problems with high vg and no leaks from the old model. batteries give out as much as you can expect from 170mah.
Ree have been good for spares.
Not seen the need for the cassiel yet as 3 fit in my ticket pocket and last me the day, however it looks a good bet for my better half. Airflow at the bottom looks good for reliability if nothing else.
No particular tips to share as this is what a CAL should be, plug and play.
Good to hear from a micro user with the old coils. Nine months is good going. I wonder if the new micro coils means that the old ones are being phased out? If so, by the time Ree store runs out of old micro spares, you can always upgrade to new micros at relatively low cost. Or by then maybe there'll be an even better third version...