I love this little bag!  I am able to pack it well for a weekend trip and even pack a few extra sets of clothes.  I have no problems with the way it wheels; it is very smooth and easy to navigate.  I can even wheel it comfortably down the aisle of the airplane, which was a huge hassle with my last wheel-on luggage.  It fits comfortably and well underneath the seat in front of me, which was a reason why I chose this smaller bag compared to others.  However, if you do want to place it in the overhead, there is a handle underneath the bag to make it easier to grab in a horizontal position.  This handle is also great when loading into a trunk!

There are two cons that I have so far run into: The handle feels VERY lightweight and the front pocket is not as accessible as I think it should be.  The handle is telescoping handle, as expected.  But it feels very flimsy when in use.  I have a Travelon strap to hold another bag on top of a rolling bag, but I was afraid to use it because I was afraid the handle would break with any extra weight on it.  As for the front pocket...I meant to use it as a pocket to hold extra items like my liquids in the quart bag.  But it is so tight and hard to access that I decided against it since I would have to take the bag out and put it back in with a line behind me.  The pocket is not easy to access and is such a tight FLAT fit that I decided to only use it to hold flat-ish items.

In short, I love this bag, and its easy enough to just not use the front pocket.  I almost can't wait to fly again just to use the bag!