The 2 of them to be honest I am not 100% sure what happened to them. I connected them via usb to computer and then it wouldnt turn on anymore. This happened to TWO boards in the same day, with 1 minute...... I was devastated and could not determine the cause, neither could Johannes. These 2 were replaced by Johannes.
The last one I don't remember.
So no deepsea diving, hehe
Yeah I think it depends on how you use it. My main goal have been to make music with only a single Axoloti. you know, have everything playing form one Axo, like kick/bass/hh/drums/pads/Etc. all from same Axoloti. And on top of that some effects., etc....., . And if you also want to use quality modules, this becomes a bit heavy for single Axoloti.
But using it as a single instrument, yeah I think SRAM is not an issue.
After having a few six month break from Axoloti I have been diving into it again and I have given up on using one single Axoloti for everything and gotten myself a display adapter so I can have have an extra display for my Macbook. That display does making working with several Axolotis a lot easier. And 2 seems to do it pretty well, all though I think I am going to get a third soon :=)
So there you go