That's definately better than the Walmart bin most people have.
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It's only $25 or so, but the downsides I've found on these are:
1) There is handle on the side to pull it with, so you need to rig something
2) I've found the lid pops off way too easy, and doesn't stay secure while traveling
My other bin is this Rubbermaid I got at Fred Meyer
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I like it because it's easy to pull along (hey, sometimes the changing area is a few blocks from the car) and the lid stays secure, but there is less room than the Walmart special. I can get all my kit in but it's there's not much room room left over.
My wife thinks I got the Caravan for haulding kids, but it's really because I can stuff three bins, two sandtrooper packs, three BFGs, Jedi kit, and two fellow troopers.
The Stanley tool box looks the best - do you know if you can take that on an airplane?