I had both setup previously and constantly ended up in my recipients spam. When I'm trying to sort my life admin with local council/government/landlord/utilities, it's one thing to have a 'cool' custom email, but it's another to say "oh yeah, sorry, it's probably in your spam".

Haven't had an issue since I moved to 365. Costs a little more but so much less hassle. I don't like it but I also need people to actually receive my emails.