Is there a difference? Okay, Le Belle, Sanchez and Adventure Line. There are probably others that I missed. What is the best? What fails on the worst? Why are some more valued {or are they} than others?

edit:
What should one pay for the different makers and in what conditions?

[url]http://www.ar15.com/forums/announcement.html?b=3&f=17&id=26[/url]

Got it thanks.

Check out the mag faq linked above for some really good info.

Just my personal opinion, but I consider them all to be about the same.  The only mags that ever had some issues were the Cooper mags.  IIRC, they didn't have as many weld spots as other USGI contract mags.  Some people pay more for mags marked Colt, they have a collector value for some.  I don't pay more than $10-$15 per mag, depending on the condition.  For NIW mags, I'll go as high as $20-$25.

Try this:

[url]http://magfaq.tripod.com/[/url]

Thanks to Troy for that page...NICE!
10-15$ seams like a good price after going through some of the 4-sale boards .