I’m using simplex without problems. I get all notifications and didn’t notice an increased battery drain.

I have tried ING and n26 only. Both work fine, no major problems with them. For ing i think that you need to send your paycheck to the ing account in order to have 0 commission. I’ve also heard good things about abanca and evo.

Be carefull with openbank. I haven’t use it, but they are just the online version of Santander bank, and Santander is one of the worst Spanish banks out there.