Unironically BPI. I've been banking with them for 10+ years - bilang lang ang unannounced downtime. And even though mas gusto ko pa yung old BPI app, the new BPI app is still better than most banking apps. Maganda rin kausap CS nila in my experience and kung nakilala mo na BM or RM if Preferred ka, mas madali na magbank sa kanila.
If you want decent Customer Service, stay away from Unionbank. I have my savings on high interest digital banks (CIMB - mostly for Gcash integration, Seabank) but I wouldn't say they have a "good name" because they're all new.
UB's app is good, it's just the CS that's awful. Hindi mo alam kung autoresponder ba kausap mo or tamad lang yung sumasagot at binabato ka ng mga canned responses. Yung question ko about not being able to sign in halos isang buwan na "we're taking this seriously and investigating" variations pa rin, lol.