Nice to see you're also using a healthy amount of burnt clay and the neps are doing well. From my observation,
N. campanulata x lowii seems to prefer drier and well drain media, it also like a lot of sun. I'm a sucker for any nep hybrids with
N. lowii in it...
I tend to agree that most EP plants are robust and have healthy roots to give a good start to quickly acclimatise to our new growing condition.
Very nice collection you have there...