I'm just purchased my first 1911 - an STI Guardian this past weekend. It is an officer's frame and came with only one 7 round magazine and the vendor I purchased the gun from was out of any extra magazines. I'm looking to purchase several additional magazines and have to admit I'm getting confused. Call me picky, but In the past, I have always purchased "factory" magazines for my handguns. I called STI and they told me to purchase any "quality" officer's size magazine. So, I did a few internet searches and found multiple options within even the same manufacturer.
So, here are my (admittedly uneducated) questions:
1. What qualifies as a "quality" brand magazine? Any that I should completely avoid?
2. Will each of the 6, 7 or 8 round officer size magazines fit?
3. Besides the obvious, what is the difference between 6, 7 and 8 round magazines?
4. Would I be better off taking my STI to the store and test fitting actual magazines or are they truly interchangeable?
Thanks in advance. The 1911 newbie appreciates any advice and guidance.