visa [s] or [z]?

Hi,
I would like to know if the S in VISA is pronounced voiceless (as [s]) or
voiced (as [z]).

thanks

I only use the voiceless pronunciation. However, I believe that both variations are used in the United States.

I used the voiced pronunciation because I find it easier to say and it's the official way that the Visa company uses/

I always say 'z'

I always pronounce it with [z].

<<I used the voiced pronunciation because I find it easier to say and it's the official way that the Visa company uses.>>

I think you're mistaken - in all the ads for Visa that I've seen, they've pronounced it with [s]. In fact, this has always struck me as odd, because most people that I know in real life pronounce it with [z].

I myself always pronounce it with a [z], and [s] sounds off to me (even though it is what is officially used by Visa itself).

I guess VISA and GREASY with [s] in Western/Northern thing while
the pronunciation with [z] is Southern/BackEast..

At least around here, "greasy" is always pronounced with [s].

"Visa" can be either way for me, but I rarely hear "greasy" pronounced with a "z". It kind of grates on my ears when I do hear it that way, but I wouldn't say it's wrong... it just sounds weird.

The pronouncing dictionary howjsay.com (I think) says "visa" with a "z" and greasy with an "s", but I've heard both words being pronounced the "other way" as well.

The site I mention seems to use British (RP, I guess) English, but does give a nod to American pronunciation. "Laboratory" doesn't even come come to the American pronunciation imo even though it's listed as "AMERICAN"...LOL!

I pronounce "greasy" with [s], and I don't think I've ever heard the pronunciation with [z].

I've heard "greaZy" when someone wants to emphasize someone's slimy character.

I hear "greasy" pronounced with [z] on rare occasions, but it is by no means native to this area at all.

Always /gi:zi/ and /vi:z@/ (for both "visa" & "Visa") where I'm from (including for me, of course).

I use both, I would be awkward I pronounce it Viz (short Z) Sa (emphasis here)