RE: Big Bag!
Before you purchase the buggy bag, I would make sure you check the zipper first and if you purchase it at a LHS, persuade them to allow you to put it together and try it out first (it's just the bottom box for the buggy itself). Although I have four different types of Trinity carry bags, the buggy bag seems to have the worse type of zipper set up. In my opinion, it should be heavier. I also wouldn't carry a starter box and battery in the buggy bag just to cut back on the overall weight. Another alternative may be a parachute bag. It is larger than a duffel bag and has a zipper down the center. Perhaps, I should dig mine out and toss all those old clothes that don't fit anymore.