Just wondering, is there any difference between
Russell vs Aerflow fittings. I need a -10 to
-10 connector and the Russell is about $21 from
Summit and the Aerflow (sp?) is $17. Can brands
be interchanged?

Yes, all interchangable. Only diff in the cheaper ones is the anodizing. The summit/jegs brand seem to loose there luster after a year or two..

Gotcha!

all AN fittings should be 37*

Sometimes I've heard of issues with mixing and matching hose ends/hose between brands.

Have you checked with airport spruce in Corona for fittings?
http://www.aircraftspruce.com/search/search.php

Stuff I found here was less than summit for the most part.

Those prices are good! Do they not do hose ends though?

The mil spec fit will work, but different brands will have fit/finish diferences. For example, some interior i.d.'s will vary on a -10 X 3/8. It actually can be dramatic. I have also seen the same size fitting, that, one had a radiused entry, and one was blunt and small. Shop around, there is a difference in quality.

I've mixed and matched Aeroquip, Russel and Summit without problem.

Low cost option link below. Steel rather than aluminum which adds some weight but they are more durable and the NPT versions won't gall when installed in aluminum.

http://www.robbmcperformance.com/products/fittings.html