Cray: Glad to see that you have finally stopped lurking and have posted. I can tell you this about the three different brands your referenced: Wolfe ammo is dirty and has jammed my guns - I will not buy it again.
Fiocci is good quality ammunition but it is expensive. I have purchased that brand before but if you buy for some of the 'off' calibers, like the 7.65 Luger or the 30 Mauser, I have found it to be expensive - but of good quality and reloadable.
S&B has never given me any problems at all. I shoot it exclusively in my 45s, 9mms, 380s, 7.62x25 Tokarevs, 32 ACP and 25 ACP, 8mms, 6.5 Swede (never a problem), 303 Brits. I have used their 38 Special, their 7.62 nato and 30-06 and have never had a problem. It is clean and inexpensive. It does not fare well for reloaders though as some folks have had problems with case head separation after one or two reloads, in both the 303 Brit and the 6.5 Swede. Truth is, it is good quality ammo but inexpensive and I doubt S&B puts a lot of effort or cost into assuring that their cases are reloadable - especially at the price they go for in loaded ammo.
I am aware that the Mag-tech is quality ammo as is the Aquilla and have used them both. I appreciate the new snake owner's information on who makes what. For a long time I thought that the Aquilla ammunition was the Mexican-Remington connection but now know the difference.
Hope this helps. Mikey.