I've used the Prodigy before. It's definitely something that messes with your head more than anything. Experience tries to tell you that anything that bends is weak, but the handles are relatively strong. I've carried the Prodigy with a full system built into it by the handles up and down stairs with no problems at all. The only thing I don't like about the flexible handles is that the bottom one does bow ever so slightly when a system is in it. It's only really noticeable when on a smooth flat surface, though.
If you're looking for small form factor, though, the Prodigy definitely isn't small. Something like the Silverstone RZV01B would be much better for that kind of build, and is only slightly larger than an XBox: http://www.amazon.com/dp/B00I3EKXDE/?tag=pcpapi-20