Excellent data point, thanks Sacfitz.

I've been a big fan of my Briggs & Riley rolling cabin bag, which I can confirm will fit the in overhead bin of a CRJ200 or an ERJ145. You need to put it in wheels out, but it fits.

The Travel Pro Crew 9 might be a better bag for me, since it has a flat, structured top. I use a modified "hybrid" approach to "1 bag" travel. I travel with a my Tristar or my Skytrain. But now I also use a rolling tote type bag, which I use as my "personal carry on item". I simply set the Tristar on top of the rolling tote, and presto - I no longer have to shoulder the load.

A rolling cabin bag with a sturdy, flat top makes "stacking" my Tristar on top of it that much easier. Plus, I can get both of those bags to fit in the overhead bin of even the smallest CRJ. I never put my second bag up above if bin space if there's not enough space for other passengers...but on those tiny CRJs, most folks are valet checking their bags, so the bin space is often not fully used. I can easily put a Tristar up there, as well as the Briggs & Riley rolling cabin bag.

I may have to give the Crew 9 rolling tote a try. It should be easy not to overstuff it, since I can fit a ton of stuff into my Tristar or Skytrain and still have it fit into the bin.