I'm a fan of the Brightline bags, having got my first one about 4 years ago. I agree with Old Akro:
Periodically I go through and and remove things I haven't used in a while
and the need for a larger bag is less because of things like Ipads etc.
The earlier bags didn't have a heavy duty zipper holding the 2 main halves together, and when it failed it was replaced it without question, including express shipping to Oz, but again the same zipper failed after a couple of years.
When at Oshkosh 2012 I visited the Brightline stand and noticed their current range had mush sturdier zippers and I mentioned my problems with the earlier zippers. The Brightline chap looked up the original sale record on his Ipad and offered me a replacement for the cost of shipping to Oz (B6 Convey), which I gladly accepted.
The thing is now, because of the Ipad (mini) and software such as OzRunways, I always leave the document half of the bag in the aircraft with maps, charts etc, do all my trip planning with the Ipad, and have less weight and bulk to carry around.