Resin is definitely quite high up on my list of options, I've done some prototyping with their SaaS service as well, my only hesitation is that the pricing is p

Resin is definitely quite high up on my list of options, I've done some prototyping with their SaaS service as well, my only hesitation is that the pricing is pretty prohibitive for the sort of volumes we're looking at in the medium term. Like you, my initial contact with them was through Hassio, which has been fantastic. Definitely going to do some digging into Yocto and Mender though.