I've used Michelin, Continental and Vittoria, bulk bought when available, all with no manufacturing failures over the last few years.
When I worked in a bike shop (maaaaany years ago) we used to buy Specialized inner tubes for about 50p each and sell them for £2.50.
considering they're made in China (or were) and the manufacturer, importer and us all took a cut and all still made a profit, I hate to think what the original manufacturing price was.
European tubes were much more expensive, but I can't ever remember having problems with them.
I honestly don't think you can trust brands, unless their business is making tubes or tyres and I have a bias towards European manufacturers.