Before I start I have to admit to being a little confused about which is electron and which is delta!
Basically I've used both.
I thought delta was the debit visa - am I right?
Anyway, had no trouble using it but was charged £1.50 each time by the Halifax.
I've used visa credit cards and was charged a fee by DH's BarclayCard but not by my HFS (RCN, nursing union card, issued by Beneficial Bank) card.
Absolutely no problem using either but a difference in charges.
I'd definitely ask around at your visa providers to get an idea of what you might be charged
Hope this helps somewhat
