atm still the best way to get euros in spain?

Yes, bank atm.

It doesn't make any difference, anytime, anywhere, the cheapest and most convenient way to obtain local currency will always be at a bank owned ATM in country with a debit card. Is there any other way to go??? Were you thinking of something else?

Yes, ATMs are the best way to get cash.

Yes. But....... Spain is the only place I have encountered a bank-operated ATM that added its own fee onto the charge from my bank back home. Just one bank that I encountered (Caixa) and I have no way of knowing if they still do it. Easy enough to avoid; cancel the transaction and move to another bank's machine; they are plentiful.

I agree about bank ATMs. But since we charge everything that can be charged, we get by on relatively low cash withdrawals in Europe.

Although the ATM system works seamlessly with our home ATMs, I always carry a second ATM card in a different institution and two Visa cards as backups. I do avoid using my Wells Fargo card that comes with $5 fees and 5% charges. I use a credit union ATM card.

Spain's BBVA banking group explains ATM fees:
https://www.bbva.es/eng/general/finanzas-vistazo/tarjetas/comisiones-cajeros/index.jsp

Cabinet passed Royal Decree 11/2015, in which the owner of the ATM
may no longer demand a fee from the user or pass on the charge to the
user, but may demand a fee from the card issuer. This fee to the
issuer may be passed on in full or in part to the customer.

I believe if you use a foreign-owned bank in S Pain they will not be charging a fee, at least that was our experience a year ago. Since this fee is actually imposed on the card issuer, then if you are using a bank that refunds fees charged, e.g. Schwab, then you would still be fee-less. Also, even with a fee, unless you make minuscule withdrawals this will still be a smaller toatl cost than the commissions or bad exchange rates charged by the money changers.

In my experience, quite a few Spanish banks add a fee if you use their cash machine with another bank's card (some, in effect, charge their own customers too). Whether your own bank passes on the fee depends on your arrangement with your bank. However, as indicated above, it's not a big amount and assuming you only make a few withdrawals for several hundred euros each time, it's not really significant.

Also, as I'm sure you might know, many cash machines "offer" DCC. Unlike the fee, though, you can decline that.

I encountered multiple fee-charging ATMs (belonging to different banks) in Barcelona during my August 2016 visit. In general, I've encountered more ATMs charging fees in Europe each year than the year before. But you'll always be notified, so you can cancel the transaction and try another ATM.